springmvc 4 返回json数据

来源：互联网发布：国外的知乎quora 编辑：程序博客网时间：2024/06/05 17:18

1.导入相关jar包

<dependency><groupId>javax.servlet</groupId><artifactId>javax.servlet-api</artifactId><version>3.1.0</version><scope>provided</scope></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>4.1.5.RELEASE</version></dependency><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-core</artifactId><version>2.5.4</version></dependency><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-databind</artifactId><version>2.5.4</version></dependency><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-annotations</artifactId><version>2.5.4</version></dependency>

2.配置servlet.xml文件

<mvc:annotation-driven /> <!-- mvc驱动 --><context:component-scan base-package="com" /> <!-- 扫描的包 --> <bean id="stringConverter"          class="org.springframework.http.converter.StringHttpMessageConverter">          <property name="supportedMediaTypes">              <list>                  <value>text/plain;charset=UTF-8</value>  字符串编码            </list>          </property>      </bean>      <bean id="jsonConverter"          class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"></bean>      <bean          class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">          <property name="messageConverters">              <list>                  <ref bean="stringConverter" />                  <ref bean="jsonConverter" />              </list>          </property>      </bean>

3.在函数方法上添加@ ResponseBody注解

@RequestMapping("/getjson")@ResponseBodypublic Object getJson() {UserInfo user = new UserInfo();user.setAge(12);user.setName("sss");user.setSex(1);BaseJson baseJson = new BaseJson();baseJson.setCode("1");baseJson.setMsg("哈哈哈哈哈哈");baseJson.setData(user);return baseJson;}

0 0