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SpringMVC+FastJson+Swagger集成的完整實例教程

基礎部分

成都創新互聯服務項目包括新余網站建設、新余網站制作、新余網頁制作以及新余網絡營銷策劃等。多年來，我們專注于互聯網行業，利用自身積累的技術優勢、行業經驗、深度合作伙伴關系等，向廣大中小型企業、政府機構等提供互聯網行業的解決方案，新余網站推廣取得了明顯的社會效益與經濟效益。目前，我們服務的客戶以成都為中心已經輻射到新余省份的部分城市，未來相信會繼續擴大服務區域并繼續獲得客戶的支持與信任！

1. FastJson 簡介

Fastjson是一個Java庫,可用于將Java對象轉換為JSON表示。它也可以被用來將一個JSON字符串轉換成一個等效的Java對象。在轉換速度上應該是最快的，幾乎成為了項目的標配（在ajax請求和接口開發時一般都會用fastjson而不再使用jackson）。

GitHub： https://github.com/alibaba/fastjson （本地下載）

特性：

  • 在服務器端和android客戶端提供最佳性能
  • 提供簡單toJSONString()和parseObject()方法的Java對象轉換為JSON,反之亦然
  • 允許存在的無法改變的對象轉換為從JSON
  • Java泛型的廣泛支持
  • 允許自定義表示對象
  • 支持任意復雜的對象(深繼承層次結構和廣泛使用泛型類型)

主要特點：

  • 快速FAST (比其它任何基于Java的解析器和生成器更快，包括jackson）
  • 強大（支持普通JDK類包括任意Java Bean Class、Collection、Map、Date或enum）
  • 零依賴（沒有依賴其它任何類庫除了JDK）
  • 支持注解

2. fastjson api

Fastjson API入口類是com.alibaba.fastjson.JSON，常用的序列化操作都可以在JSON類上的靜態方法直接完成。

// 把JSON文本parse為JSONObject或者JSONArray 
public static final Object parse(String text); 

// 把JSON文本parse成JSONObject 
public static final JSONObject parseObject(String text)； 

// 把JSON文本parse為JavaBean 
public static final <T> T parseObject(String text, Class<T> clazz); 

// 把JSON文本parse成JSONArray 
public static final JSONArray parseArray(String text); 

// 把JSON文本parse成JavaBean集合 
public static final <T> List<T> parseArray(String text, Class<T> clazz); 

// 將JavaBean序列化為JSON文本 
public static final String toJSONString(Object object); 

// 將JavaBean序列化為帶格式的JSON文本 
public static final String toJSONString(Object object, boolean prettyFormat); 

// 將JavaBean轉換為JSONObject或者JSONArray
public static final Object toJSON(Object javaObject);

JSONArray：相當于List<Object>

JSONObject：相當于Map<String, Object>

SerializeConfig: 是對序列化過程中一些序列化過程的特殊配置, 如對一些字段進行格式處理（日期、枚舉等）

SerializeWriter：相當于StringBuffer

SerializerFeature屬性 ：

  • QuoteFieldNames 輸出key時是否使用雙引號,默認為true
  • UseSingleQuotes 使用單引號而不是雙引號,默認為false
  • WriteMapNullValue 是否輸出值為null的字段,默認為false
  • WriteEnumUsingToString Enum輸出name()或者original,默認為false
  • UseISO8601DateFormat Date使用ISO8601格式輸出，默認為false
  • WriteNullListAsEmpty List字段如果為null,輸出為[],而非null
  • WriteNullStringAsEmpty 字符類型字段如果為null,輸出為”“,而非null
  • WriteNullNumberAsZero 數值字段如果為null,輸出為0,而非null
  • WriteNullBooleanAsFalse Boolean字段如果為null,輸出為false,而非null
  • SkipTransientField 如果是true，類中的Get方法對應的Field是transient，序列化時將會被忽略。默認為true
  • SortField 按字段名稱排序后輸出。默認為false
  • WriteTabAsSpecial 把\t做轉義輸出，默認為false 不推薦
  • PrettyFormat 結果是否格式化,默認為false
  • WriteClassName 序列化時寫入類型信息，默認為false。反序列化是需用到
  • DisableCircularReferenceDetect 消除對同一對象循環引用的問題，默認為false
  • WriteSlashAsSpecial 對斜杠'/'進行轉義
  • BrowserCompatible 將中文都會序列化為\uXXXX格式，字節數會多一些，但是能兼容IE 6，默認為false
  • WriteDateUseDateFormat 全局修改日期格式,默認為false。JSON.DEFFAULT_DATE_FORMAT = “yyyy-MM-dd”;JSON.toJSONString(obj, SerializerFeature.WriteDateUseDateFormat);
  • DisableCheckSpecialChar 一個對象的字符串屬性中如果有特殊字符如雙引號，將會在轉成json時帶有反斜杠轉移符。如果不需要轉義，可以使用這個屬性。默認為false
  • NotWriteRootClassName 含義
  • BeanToArray 將對象轉為array輸出
  • WriteNonStringKeyAsString
  • NotWriteDefaultValue
  • BrowserSecure
  • IgnoreNonFieldGetter
  • WriteEnumUsingName

實戰部分

Spring MVC+FastJson+Swagger集成的完整實例教程

1、pom.xml 中引入spring mvc、 fastjson 依賴

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
 <modelVersion>4.0.0</modelVersion>
 <groupId>com.mengdee</groupId>
 <artifactId>platform-springmvc-webapp</artifactId>
 <packaging>war</packaging>
 <version>0.0.1-SNAPSHOT</version>
 <name>platform-springmvc-webapp Maven Webapp</name>
 <url>http://maven.apache.org</url>

 <properties>
 <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 <junit.version>3.8.1</junit.version>
 <log4j.version>2.5</log4j.version>
 <jstl.version>1.2</jstl.version>
 <spring.version>4.2.3.RELEASE</spring.version>
 <fastjson.version>1.2.32</fastjson.version>

 </properties>

 <dependencies>
 <dependency>
 <groupId>junit</groupId>
 <artifactId>junit</artifactId>
 <version>3.8.1</version>
 <scope>test</scope>
 </dependency>

 <dependency>
 <groupId>javax.servlet</groupId>
 <artifactId>jstl</artifactId>
 <version>${jstl.version}</version>
 </dependency>

 <!-- springframework -->
 <dependency>
 <groupId>org.springframework</groupId>
 <artifactId>spring-webmvc</artifactId>
 <version>${spring.version}</version>
 </dependency>
 <dependency>
 <groupId>org.springframework</groupId>
 <artifactId>spring-core</artifactId>
 <version>${spring.version}</version>
 </dependency>
 <dependency>
 <groupId>org.springframework</groupId>
 <artifactId>spring-context</artifactId>
 <version>${spring.version}</version>
 </dependency>
 <dependency>
 <groupId>org.springframework</groupId>
 <artifactId>spring-context-support</artifactId>
 <version>${spring.version}</version>
 </dependency>
 <dependency>
 <groupId>org.springframework</groupId>
 <artifactId>spring-jdbc</artifactId>
 <version>${spring.version}</version>
 </dependency>

 <dependency>
 <groupId>com.alibaba</groupId>
 <artifactId>fastjson</artifactId>
 <version>${fastjson.version}</version>
 </dependency>

 </dependencies>

 <!-- 使用aliyun鏡像 -->
 <repositories>
 <repository>
 <id>aliyun</id>
 <name>aliyun</name>
 <url>http://maven.aliyun.com/nexus/content/groups/public</url>
 </repository>
 </repositories>

 <build>
 <finalName>platform-springmvc-webapp</finalName>
 </build>
</project>

2、 配置web.xml

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
 <display-name>Archetype Created Web Application</display-name>
 <context-param>
 <param-name>contextConfigLocation</param-name>
 <param-value>classpath:conf/spring/spring-*.xml</param-value>
 </context-param>

 <listener>
 <description>Spring監聽器</description>
 <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
 </listener>

 <servlet>
 <servlet-name>spring-mvc</servlet-name>
 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
 <init-param> 
 <param-name>contextConfigLocation</param-name> 
 <param-value>/WEB-INF/spring-servlet.xml</param-value> 
 </init-param>
 <load-on-startup>1</load-on-startup>
 </servlet>
 <servlet-mapping>
 <servlet-name>spring-mvc</servlet-name>
 <url-pattern>/</url-pattern>
 </servlet-mapping>

 <filter>
 <filter-name>characterEncodingFilter</filter-name>
 <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
 <init-param>
 <param-name>encoding</param-name>
 <param-value>UTF-8</param-value>
 </init-param>
 <init-param>
 <param-name>forceEncoding</param-name>
 <param-value>true</param-value>
 </init-param>
 </filter>
 <filter-mapping>
 <filter-name>characterEncodingFilter</filter-name>
 <url-pattern>/*</url-pattern>
 </filter-mapping>


 <welcome-file-list>
 <welcome-file>/index.jsp</welcome-file>
 </welcome-file-list>

 <error-page>
 <error-code>404</error-code>
 <location>/index.jsp</location>
 </error-page>
</web-app>

3、 配置spring-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xmlns:p="http://www.springframework.org/schema/p"
 xmlns:context="http://www.springframework.org/schema/context"
 xmlns:mvc="http://www.springframework.org/schema/mvc"
 xsi:schemaLocation="http://www.springframework.org/schema/beans 
 http://www.springframework.org/schema/beans/spring-beans-4.2.xsd 
 http://www.springframework.org/schema/mvc 
 http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd 
 http://www.springframework.org/schema/context 
 http://www.springframework.org/schema/context/spring-context-4.2.xsd">

 <context:component-scan base-package="com.mengdee.manage.controller" />

 <bean id="ViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 
 <property name="prefix" value="/"></property> <!-- 視圖文件的前綴 --> 
 <property name="suffix" value=".jsp"></property> <!-- 視圖文件的后綴名 --> 
 <!-- view是用什么顯示，這里是jsp，還可以用velocity之類的 --> 
 <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"></property> 
 </bean> 

 <!-- 啟動Spring MVC的注解功能，完成請求和注解POJO的映射 -->
 <mvc:annotation-driven>
 <mvc:message-converters register-defaults="true">
 <!-- 配置Fastjson 替換原來的jackson支持 -->
 <bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
 <property name="supportedMediaTypes">
 <list>
 <value>text/html;charset=UTF-8</value>
 <value>application/json</value>
 </list>
 </property>
 <property name="features">
 <list>

 <value>QuoteFieldNames</value> <!-- 輸出key時是否使用雙引號,默認為true -->
 <value>WriteMapNullValue</value> <!-- 是否輸出值為null的字段,默認為false -->

 <!-- 
 <value>DisableCircularReferenceDetect</value>
 <value>WriteDateUseDateFormat</value> 
 <value>WriteNullStringAsEmpty</value> 字符類型字段如果為null,輸出為"",而非null 
 <value>WriteNullNumberAsZero</value> 數值字段如果為null,輸出為0,而非null 
 <value>WriteNullBooleanAsFalse</value> Boolean字段如果為null,輸出為false,而非null 
 <value>WriteNullListAsEmpty</value> List字段如果為null,輸出為[],而非null
 -->

 </list>
 </property>
 </bean>
 </mvc:message-converters>
 </mvc:annotation-driven>
</beans>

4、Java

Education:學歷(枚舉類)

package com.mengdee.manage.entity;
import java.util.HashMap;
import java.util.Map;
/**
 * 學歷
 * @author Administrator
 *
 */
public enum Education {
 KINDERGARTEN("幼兒園", 1),
 ELEMENTARY("小學", 2),
 JUNIOR_MIDDLE("初級中學", 3),
 SENIOR_MIDDLE("高級中學", 4),
 UNIVERSITY("大學", 5),
 COLLEGE("學院", 6);
 private static final Map<Integer, Education> EDUCATION_MAP = new HashMap<Integer, Education>();
 static {
 for (Education education : Education.values()) {
 EDUCATION_MAP.put(education.getIndex(), education);
 }
 }

 private String text;
 private int index;

 private Education(String text, int index) {
 this.text = text;
 this.index = index;
 }


 public String getText() {
 return text;
 }

 public void setText(String text) {
 this.text = text;
 }

 public int getIndex() {
 return index;
 }

 public void setIndex(int index) {
 this.index = index;
 }


 public static Education getEnum(Integer index) {
 return EDUCATION_MAP.get(index);
 }
}

Person:

package com.mengdee.manage.entity;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;
import com.alibaba.fastjson.annotation.JSONField;
public class Person {

 private Long id;
 private String name;

 private byte gender; // 性別 1：男 2：女
 private short age; // 年齡
 private long salary; // 薪水
 private double weight; // 體重
 private char level; // 評級

 private boolean adult; // 是否成年人
 private Date birthday; // 生日
 private Education education;// 學歷

 private String[] hobbies; // 愛好
 private List<Dog> dogs; // 寵物狗
 private Map<String, Object> address; // 住址

 // 使用注解控制是否要序列化
 @JSONField(serialize = false)
 private List<Object> obj = new ArrayList<>();

 public Person() {

 }
 public Person(Long id, String name, byte gender, short age, long salary, double weight, char level, boolean adult,
 Date birthday, String[] hobbies, List<Dog> dogs, Map<String, Object> address) {
 super();
 this.id = id;
 this.name = name;
 this.gender = gender;
 this.age = age;
 this.salary = salary;
 this.weight = weight;
 this.level = level;
 this.adult = adult;
 this.birthday = birthday;
 this.hobbies = hobbies;
 this.dogs = dogs;
 this.address = address;
 }


 public Long getId() {
 return id;
 }
 public void setId(Long id) {
 this.id = id;
 }
 public String getName() {
 return name;
 }
 public void setName(String name) {
 this.name = name;
 }
 public byte getGender() {
 return gender;
 }
 public void setGender(byte gender) {
 this.gender = gender;
 }
 public short getAge() {
 return age;
 }
 public void setAge(short age) {
 this.age = age;
 }
 public long getSalary() {
 return salary;
 }
 public void setSalary(long salary) {
 this.salary = salary;
 }
 public double getWeight() {
 return weight;
 }
 public void setWeight(double weight) {
 this.weight = weight;
 }
 public char getLevel() {
 return level;
 }
 public void setLevel(char level) {
 this.level = level;
 }
 public boolean isAdult() {
 return adult;
 }
 public void setAdult(boolean adult) {
 this.adult = adult;
 }
 public Date getBirthday() {
 return birthday;
 }
 public void setBirthday(Date birthday) {
 this.birthday = birthday;
 }

 // 處理序列化枚舉類型，默認的值是序列化枚舉值字符串，而不是枚舉綁定的索引或者文本
 @JSONField(name = "edu")
 public int getEdu(){
 return education.getIndex();
 }

 @JSONField(name = "edu")
 public void setEdu(int index){
 this.education = Education.getEnum(index);
 }

 @JSONField(serialize = false)
 public Education getEducation() {
 return education;
 }

 @JSONField(serialize = false)
 public void setEducation(Education education) {
 this.education = education;
 }


 public String[] getHobbies() {
 return hobbies;
 }
 public void setHobbies(String[] hobbies) {
 this.hobbies = hobbies;
 }
 public List<Dog> getDogs() {
 return dogs;
 }
 public void setDogs(List<Dog> dogs) {
 this.dogs = dogs;
 }
 public Map<String, Object> getAddress() {
 return address;
 }
 public void setAddress(Map<String, Object> address) {
 this.address = address;
 }
}

TestController

package com.mengdee.manage.controller;

import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.serializer.DoubleSerializer;
import com.alibaba.fastjson.serializer.SerializeConfig;
import com.alibaba.fastjson.serializer.SimpleDateFormatSerializer;
import com.mengdee.manage.entity.Address;
import com.mengdee.manage.entity.Dog;
import com.mengdee.manage.entity.Education;
import com.mengdee.manage.entity.Person;

@Controller
public class TestController {
 private static SerializeConfig serializeConfig = new SerializeConfig(); 
 static {
 serializeConfig.put(Date.class, new SimpleDateFormatSerializer("yyyy-MM-dd HH:mm:ss")); 
 serializeConfig.put(Double.class, new DoubleSerializer(new DecimalFormat("0.00")));
 }


 @RequestMapping("/index")
 public String index(){
 return "index";
 }


 // javabean to object
 @RequestMapping("/json")
 @ResponseBody
 public Object json(){
 Person person = new Person();
 person.setId(1L);
 person.setName("mengdee");
 person.setAge((short) 18);

 // 
 /*
 {
 "birthday": null, 
 "weight": 0, 
 "dogs": null, 
 "adult": false, 
 "hobbies": null, 
 "education": null, 
 "id": 1, 
 "level": "", 
 "address": null, 
 "age": 18, 
 "name": "mengdee", 
 "gender": 0, 
 "salary": 0
 }
 */
 Object personJson = JSON.toJSON(person);
 return personJson;
 }

 // javabean to string
 @RequestMapping("/json2")
 @ResponseBody
 public String json2(){
 Person person = new Person();
 person.setId(1L);
 person.setName("mengdee");
 person.setAge((short) 18);

 // 使用該方式值為null的經測試不出來，已經配置了<value>WriteMapNullValue</value>
// "{"adult":false,"age":18,"gender":0,"id":1,"level":"","name":"mengdee","salary":0,"weight":0.0}"
 String jsonString = JSON.toJSONString(person);
 return jsonString;
 }

 @RequestMapping("/json3")
 @ResponseBody
 public Object json3(){
 Person person = new Person();
 person.setId(1L);
 person.setName("mengdee");
 person.setAge((short) 18);
 person.setBirthday(new Date()); 

 Object personJson = JSON.toJSON(person); // JSON.toJSON(person)默認是毫秒數"birthday":1495073314780,

// 使用serializeConfig序列號配置對日期格式化
// "{"birthday":"2017-05-18 10:19:55","weight":0.0,"adult":false,"id":1,"level":"","age":18,"name":"mengdee","gender":0,"salary":0}"
 String jsonString = JSON.toJSONString(personJson, serializeConfig);
 return jsonString;
 }


 @RequestMapping("/json4")
 @ResponseBody
 public Object json4(){
 Person person = new Person();
 person.setId(1L);
 person.setName("mengdee");
 person.setAge((short) 18);
 person.setBirthday(new Date()); 
 person.setEducation(Education.UNIVERSITY); // 枚舉

 String[] hobbies = {"讀書", "旅游"};
 person.setHobbies(hobbies);

 Dog dog1 = new Dog(1L, "dog1", (short)1);
 Dog dog2 = new Dog(2L, "dog2", (short)2);
 List<Dog> dogs = new ArrayList<>();
 dogs.add(dog1);
 dogs.add(dog2);
 person.setDogs(dogs);

 Address address1 = new Address(1l, "上海浦東新區");
 Address address2 = new Address(2l, "上海寶山區");
 Map<String, Object> addressMap = new HashMap<>();
 addressMap.put(address1.getId() + "", address1);
 addressMap.put(address2.getId() + "", address2);
 person.setAddress(addressMap);



 Object personJson = JSON.toJSON(person);

 return personJson;
 }

 @RequestMapping("/json5")
 @ResponseBody
 public String json5(){
 Dog dog1 = new Dog(1L, "dog1", (short)1);
 Dog dog2 = new Dog(2L, "dog2", (short)2);
 List<Dog> dogs = new ArrayList<>();
 dogs.add(dog1);
 dogs.add(dog2);

 // List<T> -> JSON
 String jsonString = JSON.toJSONString(dogs, false);
 System.out.println(jsonString);

 // JSON -> List<T> 
 List<Dog> parseArray = JSON.parseArray(jsonString, Dog.class);
 for (Dog dog : parseArray) {
 System.out.println(dog);
 }

 Map<String,Dog> map = new HashMap<String, Dog>(); 
 map.put("dog1",new Dog(1L, "dog1", (short)1)); 
 map.put("dog2",new Dog(2L, "dog2", (short)2)); 
 map.put("dog3",new Dog(3L, "dog3", (short)3)); 

 // Map -> JSON
 String mapJsonString = JSON.toJSONString(map,true); 
 System.out.println(mapJsonString); 

 // JSON -> Map 
 @SuppressWarnings("unchecked")
 Map<String,Dog> map1 = (Map<String,Dog>)JSON.parse(mapJsonString); 
 for (String key : map1.keySet()) { 
 System.out.println(key + ":" + map1.get(key)); 
 }

 // Array -> JSON
 String[] hobbies = {"a","b","c"}; 
 String hobbiesString = JSON.toJSONString(hobbies,true); 
 System.out.println(hobbies); 

 // JSON -> Array
 JSONArray jsonArray = JSON.parseArray(hobbiesString); 
 for (Object o : jsonArray) { 
 System.out.println(o); 
 } 
 System.out.println(jsonArray); 
 return jsonString;
 }
}

Swagger集成

第一步：引入相關依賴

<dependency>
 <groupId>io.springfox</groupId>
 <artifactId>springfox-swagger2</artifactId>
 <version>2.6.1</version>
 <scope>compile</scope>
</dependency>
<dependency>
 <groupId>com.fasterxml.jackson.core</groupId>
 <artifactId>jackson-databind</artifactId>
 <version>2.6.6</version>
</dependency>

第二步：Swagger信息配置

SwaggerConfig.java

@Configuration
@EnableWebMvc
@EnableSwagger2
public class SwaggerConfig {
 @Bean
 public Docket customDocket() {
 Docket docket = new Docket(DocumentationType.SWAGGER_2);
 docket.apiInfo(apiInfo());
 docket.select().apis(RequestHandlerSelectors.withMethodAnnotation(ApiOperation.class));
 docket.select().paths(PathSelectors.regex("/api/.*")).build();

 return docket;
 }

 private ApiInfo apiInfo() {
 Contact contact = new Contact("小明", "http://www.baidu.com", "baidu@163.com");
 return new ApiInfo("API接口", //大標題 title
 "API接口", //小標題
 "0.0.1", //版本
 "www.baidu.com",//termsOfServiceUrl
 contact,//作者
 "API接口",//鏈接顯示文字
 "http://www.baidu.com"http://網站鏈接
 );
 }
}

注意：因SwaggerConfig這個類配置了注解，所以這個類必須被掃描到，即該類一定包含在context:component-scan中。

第三步：在類、方法、參數上使用注解

@Controller
@RequestMapping("/api/v1")
@Api(description = "API接口")
public class ApiController {
 @ApiOperation(value = "用戶登錄", notes = "用戶登錄接口")
 @ApiResponses({
 @ApiResponse(code = 0, message = "success"),
 @ApiResponse(code = 10001, message = "用戶名錯誤", response = IllegalArgumentException.class),
 @ApiResponse(code = 10002, message = "密碼錯誤")
 })
 @RequestMapping(value = "/user/login", method = RequestMethod.POST, produces = {"application/json;charset=UTF-8;"})
 @ResponseBody
 public String login(@ApiParam(name = "username", value = "用戶名", required = true) @RequestParam String username,
  @ApiParam(name = "password", value = "密碼", required = true) @RequestParam String password){
 return "{'username':'" + username + "', 'password':'" + password + "'}";
 }


 @ApiImplicitParams({
 @ApiImplicitParam(paramType = "header", name = "phone", dataType = "String", required = true, value = "手機號"),
 @ApiImplicitParam(paramType = "query", name = "nickname", dataType = "String", required = true, value = "nickname", defaultValue = "雙擊666"),
 @ApiImplicitParam(paramType = "path", name = "platform", dataType = "String", required = true, value = "平臺", defaultValue = "PC"),
 @ApiImplicitParam(paramType = "body", name = "password", dataType = "String", required = true, value = "密碼")
 })
 @RequestMapping(value = "/{platform}/user/regist", method = RequestMethod.POST, produces = {"application/json;charset=UTF-8;"})
 @ResponseBody
 public String regist(@RequestHeader String phone, @RequestParam String nickname, @PathVariable String platform, @RequestBody String password){
 return "{'username':'" + phone + "', 'nickname':'" + nickname + "', 'platform': '" + platform + "', 'password':'"+password+"'}";
 }

 @RequestMapping(value = "/user/list", method = RequestMethod.GET, produces = {"application/json;charset=UTF-8;"})
 @ResponseBody
 public String getUserList(Pager pager){
 return "[{'id': "+pager.getPage()+", 'username': 'zhangsan"+pager.getSize()+"'}]";
 }

 @RequestMapping("/docs")
 @ApiIgnore
 public String test(){
 return "api-docs";
 }
}

Pager

public class Pager {
 @ApiModelProperty(value = "頁碼", required = true)
 private int page;
 @ApiModelProperty(value = "每頁條數", required = true)
 private int size;

 public Pager() {
 }

 public int getPage() {
 return page;
 }

 public void setPage(int page) {
 this.page = page;
 }

 public int getSize() {
 return size;
 }

 public void setSize(int size) {
 this.size = size;
 }
}

常用注解：

  • @Api(description = “接口類的描述”)
  • @ApiOperation(value = “接口方法的名稱”, notes = “備注說明”)
  • @ApiParam(name = “參數名稱”, value = “備注說明”, required = 是否必須)：標注在方法的參數上 用于描述參數的名稱、備注、是否必須等信息
  • @ApiImplicitParam(paramType = “query”, name = “password”, dataType = “String”, required = true, value = “密碼”, defaultValue = “123456”)用于描述方法的參數，標注在方法上，和@ApiParam功能一樣，只是標注的位置不同而已
         .paramType：參數類型，即參數放在哪個地方
                .   header–>請求參數的獲取：@RequestHeader，參數放在請求頭
                 .   query–>請求參數的獲取：@RequestParam，參數追加在url后面
                 .   path（用于restful接口）–>請求參數的獲取：@PathVariable
                 .   body 使用@RequestBody接收數據 POST有效，參數放在請求體中
                 .    form
        .name：參數名
        .dataType：參數的數據類型
        .required：參數是否必須傳
        .value：參數的描述
        .defaultValue：參數的默認值
  • @ApiImplicitParams： 用于包含多個@ApiImplicitParam
  • @ApiResponse(code = 0, message = “success”),
         .code：響應碼，例如400
         .message：信息，一般是對code的描述
         .response：拋出異常的類
  • @ApiModel：描述一個Model的信息（這種一般用在post創建的時候，使用@RequestBody這樣的場景，請求參數無法使用@ApiImplicitParam注解進行描述的時候）
         .@ApiModelProperty：描述一個model的屬性
                  .   position 允許在模型中顯式地排序屬性。
                  .   value 參數名稱
                  .   required 是否必須 boolean
                  .   hidden 是否隱藏 boolean
                  .   allowableValues = “range[0, 1]” 一般用于指定參數的合法值
  • @ApiIgnore：用于或略該接口，不生成該接口的文檔

第四步：訪問/v2/api-docs

在瀏覽器上訪問http://localhost:8080/工程名稱/v2/api-docs 如果有json內容，證明正常

Spring MVC+FastJson+Swagger集成的完整實例教程

第五步：下載swagger-ui

從github上下載https://github.com/swagger-api/swagger-ui，注意這里要選擇下載v2.2.10（https://github.com/swagger-api/swagger-ui/tree/v2.2.10 （本地下載）），大于這個版本的集成方式不一樣。

集成方法：將v2.2.10下的dist目錄下的所有文件放到自己工程中靜態文件中，并使用下面代碼覆蓋掉index.html中的腳本部分

<script type="text/javascript">
 var baseUrl = "";
 $(function () {
  var url = window.location.search.match(/url=([^&]+)/);
  if (url && url.length > 1) {
  url = decodeURIComponent(url[1]);
  } else {
  //上面描述的api-docs地址
  url = baseUrl + "/webapp/v2/api-docs";
  }

  // Pre load translate...
  if (window.SwaggerTranslator) {
  window.SwaggerTranslator.translate();
  }
  window.swaggerUi = new SwaggerUi({
  url: url,
  validatorUrl: undefined,
  dom_id: "swagger-ui-container",
  supportedSubmitMethods: ['get', 'post', 'put', 'delete', 'patch'],
  onComplete: function (swaggerApi, swaggerUi) {

   if (typeof initOAuth == "function") {
   initOAuth({
    clientId: "your-client-id",
    clientSecret: "your-client-secret-if-required",
    realm: "your-realms",
    appName: "your-app-name",
    scopeSeparator: ",",
    additionalQueryStringParams: {}
   });
   }

   if (window.SwaggerTranslator) {
   window.SwaggerTranslator.translate();
   }

   $('pre code').each(function (i, e) {
   hljs.highlightBlock(e)
   });

   addApiKeyAuthorization();
  },
  onFailure: function (data) {
   log("Unable to Load SwaggerUI");
  },
  docExpansion: "none",
  jsonEditor: false,
  apisSorter: "alpha",
  defaultModelRendering: 'schema',
  showRequestHeaders: false
  });

  //這里可以添加權限認證，例如token
  function addApiKeyAuthorization() {
  var token = "you-token";
  var tokenHeader = new SwaggerClient.ApiKeyAuthorization("token", token, "header");
  window.swaggerUi.api.clientAuthorizations.add("token", tokenHeader);
  }

  window.swaggerUi.load();
  function log() {
  if ('console' in window) {
   console.log.apply(console, arguments);
  }
  }
 });
 </script>

第六步：訪問上面修改的那個index.html
http://localhost:8080/工程名稱/static/third-party/swagger-ui/index.html

注意：因要訪問靜態資源，使用springmvc請確保靜態資源能夠被訪問到，如果不能訪問請做如下配置：

1、 在Spring的配置文件中增加默認的servlet處理器

<!-- 過濾靜態資源 -->
<mvc:default-servlet-handler/>

2、 在web.xml中增加要過濾的靜態文件

<!-- 過濾靜態資源 -->
<servlet-mapping>
 <servlet-name>default</servlet-name>
 <url-pattern>*.js</url-pattern>
 <url-pattern>*.css</url-pattern>
 <url-pattern>/assets/*"</url-pattern>
 <url-pattern>/images/*</url-pattern>
</servlet-mapping>

Spring MVC+FastJson+Swagger集成的完整實例教程

示例項目代碼結構：

Spring MVC+FastJson+Swagger集成的完整實例教程

完整示例Demo下載地址： http://xiazai.jb51.net/201804/yuanma/platform-springmvc-webapp(jb51.net).rar

其他

關于spring-servlet.xml 和 applicationContext.xml

SpringMVC 提供了兩種配置文件 spring-servlet.xml 、 applicationContext.xml
spring-servlet.xml 是Controller級別的，作用范圍是控制層，默認的名字是【servlet-name】-servlet.xml
默認是放在WEB-INF/目錄下，SpringMVC會自動加載，也可以在web.xml中配置它的位置

<servlet>
 <servlet-name>spring-mvc</servlet-name>
 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
 <init-param> 
 <param-name>contextConfigLocation</param-name> 
 <param-value>/WEB-INF/spring-servlet.xml</param-value> 
 </init-param>
 <load-on-startup>1</load-on-startup>
</servlet>

一般在spring-servlet.xml中配置一些和控制器相關的配置,如視圖解析、靜態資源文件的映射、返回結果的解析等

視圖解析

  • org.springframework.web.servlet.view.UrlBasedViewResolver
  • tiles3： org.springframework.web.servlet.view.tiles3.TilesConfigurer
  • springMVC: org.springframework.web.servlet.view.InternalResourceViewResolver，
  • shiro: org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor
  • 上傳 org.springframework.web.multipart.commons.CommonsMultipartResolver，

靜態資源映射

<mvc:resources location="/static/" mapping="/static/**" />
<mvc:resources location="/images/" mapping="/static/**" />
<mvc:resources location="/css/" mapping="/static/**" />
<mvc:resources location="/js/" mapping="/static/**" />
<mvc:resources location="/html/" mapping="/static/**" /> 
<mvc:resources location="/upload/" mapping="/static/**" />

org.springframework.context.support.ResourceBundleMessageSource

返回結果的解析

  • FastJson: com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter

3、applicationContext.xml 是系統級別的配置，作用范圍是系統上下文，它的初始化需要放到 web.xml 中的context-param中配置

<context-param>
 <param-name>contextConfigLocation</param-name>
 <param-value>classpath:conf/spring/spring-*.xml</param-value>
</context-param>

4、 關于applicationContxt.xml，一般是按照功能拆成多個配置文件如：

  • - applicationContxt-base.xml // 基礎
  • - applicationContxt-redis.xml // redis相關配置
  • - applicationContxt-shiro.xml // shiro 相關配置
  • - applicationContxt-dao.xml // 數據庫相關配置
  • - applicationContxt-xxx.xml // xxx

總結

以上就是這篇文章的全部內容了，希望本文的內容對大家的學習或者工作具有一定的參考學習價值，如果有疑問大家可以留言交流，謝謝大家對創新互聯的支持。

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