SpringMVC4-JSON2

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json用起来

  • 导入json
  • 配置json
  • 新建对象
  • 转化为json
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<dependency>
           <groupId>com.fasterxml.jackson.core</groupId>
           <artifactId>jackson-databind</artifactId>
           <version>2.5.2</version>
</dependency>
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<!--解决json 乱码配置-->
   <mvc:annotation-driven>
       <mvc:message-converters register-defaults="true">
           <bean class="org.springframework.http.converter.StringHttpMessageConverter">
              <constructor-arg value="UTF-8"/>
           </bean>
           <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
               <property name="objectMapper">
                   <bean class="org.springframework.http.converter.json.Jackson2ObjectMapperFactoryBean">
                       <property name="failOnEmptyBeans" value="false"/>
                   </bean>
               </property>
           </bean>
       </mvc:message-converters>
   </mvc:annotation-driven>
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@ResponseBody
@RequestMapping("/json1")
public String json1() throws JsonProcessingException {
    return new ObjectMapper().writeValueAsString(
            new node(1, 2L, "hello"));
}

fastjson用起来

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<!-- https://mvnrepository.com/artifact/com.alibaba/fastjson -->
  <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>fastjson</artifactId>
      <version>1.2.68</version>
  </dependency>
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@ResponseBody
@RequestMapping("/json2")
public String json2() {
    return JSON.toJSONString(new node(1, 2L, "hello fastjson 你好"));
}