Spring MVC+FastJson+Swagger集成的完整实例教程

// 把JSON文本parse为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为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); // 将JavaBean序列化为JSON文本 public static final String toJSONString(Object object); // 将JavaBean序列化为带格式的JSON文本 public static final String toJSONString(Object object, boolean prettyFormat); // 将JavaBean转换为JSONObject或者JSONArraypublic static final Object toJSON(Object javaObject); 

<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镜像 --> <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>

<!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监听器</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>

<?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> <!-- 视图文件的前缀 -->  <property name="suffix" value=".jsp"></property> <!-- 视图文件的后缀名 -->  <!-- view是用什么显示，这里是jsp，还可以用velocity之类的 -->  <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"></property>  </bean>  <!-- 启动Spring MVC的注解功能，完成请求和注解POJO的映射 --> <mvc:annotation-driven> <mvc:message-converters register-defaults="true"> <!-- 配置Fastjson 替换原来的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> <!-- 输出key时是否使用双引号,默认为true --> <value>WriteMapNullValue</value> <!-- 是否输出值为null的字段,默认为false --> <!--  <value>DisableCircularReferenceDetect</value> <value>WriteDateUseDateFormat</value>  <value>WriteNullStringAsEmpty</value> 字符类型字段如果为null,输出为"",而非null  <value>WriteNullNumberAsZero</value> 数值字段如果为null,输出为0,而非null  <value>WriteNullBooleanAsFalse</value> Boolean字段如果为null,输出为false,而非null  <value>WriteNullListAsEmpty</value> List字段如果为null,输出为[],而非null --> </list> </property> </bean> </mvc:message-converters> </mvc:annotation-driven></beans> 

package com.mengdee.manage.entity;import java.util.HashMap;import java.util.Map;/** * 学历 * @author Administrator * */public enum Education { KINDERGARTEN("幼儿园", 1), ELEMENTARY("小学", 2), JUNIOR_MIDDLE("初级中学", 3), SENIOR_MIDDLE("高级中学", 4), UNIVERSITY("大学", 5), COLLEGE("学院", 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); }}

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; // 性别 1：男 2：女 private short age; // 年龄 private long salary; // 薪水 private double weight; // 体重 private char level; // 评级 private boolean adult; // 是否成年人 private Date birthday; // 生日 private Education education;// 学历 private String[] hobbies; // 爱好 private List<Dog> dogs; // 宠物狗 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; } // 处理序列化枚举类型，默认的值是序列化枚举值字符串，而不是枚举绑定的索引或者文本 @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; }}

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;@Controllerpublic 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); // 使用该方式值为null的经测试不出来，已经配置了<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)默认是毫秒数"birthday":1495073314780,// 使用serializeConfig序列号配置对日期格式化// "{"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); // 枚举 String[] hobbies = {"读书", "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, "上海浦东新区"); Address address2 = new Address(2l, "上海宝山区"); 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; }}

<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>

@Configuration@EnableWebMvc@EnableSwagger2public 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", //大标题 title "API接口", //小标题 "0.0.1", //版本 "www.baidu.com",//termsOfServiceUrl contact,//作者 "API接口",//链接显示文字 "http://www.baidu.com"//网站链接 ); }}

@Controller@RequestMapping("/api/v1")@Api(description = "API接口")public class ApiController { @ApiOperation(value = "用户登录", notes = "用户登录接口") @ApiResponses({ @ApiResponse(code = 0, message = "success"), @ApiResponse(code = 10001, message = "用户名错误", response = IllegalArgumentException.class), @ApiResponse(code = 10002, message = "密码错误") }) @RequestMapping(value = "/user/login", method = RequestMethod.POST, produces = {"application/json;charset=UTF-8;"}) @ResponseBody public String login(@ApiParam(name = "username", value = "用户名", required = true) @RequestParam String username,  @ApiParam(name = "password", value = "密码", required = true) @RequestParam String password){ return "{'username':'" + username + "', 'password':'" + password + "'}"; } @ApiImplicitParams({ @ApiImplicitParam(paramType = "header", name = "phone", dataType = "String", required = true, value = "手机号"), @ApiImplicitParam(paramType = "query", name = "nickname", dataType = "String", required = true, value = "nickname", defaultValue = "双击666"), @ApiImplicitParam(paramType = "path", name = "platform", dataType = "String", required = true, value = "平台", defaultValue = "PC"), @ApiImplicitParam(paramType = "body", name = "password", dataType = "String", required = true, value = "密码") }) @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"; }}

public class Pager { @ApiModelProperty(value = "页码", required = true) private int page; @ApiModelProperty(value = "每页条数", 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; }}

<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  });  //这里可以添加权限认证，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>

<!-- 过滤静态资源 --><mvc:default-servlet-handler/>

<!-- 过滤静态资源 --><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>

<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>

<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/**" />

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