使用JSon发布RestTemplate

Question

@Controller
public class ABCController
{

     @RequestMapping(method = RequestMethod.POST, value = "/user/authenticate")
     public @ResponseBody LoginResponse login(@RequestParam("email") String email,@RequestParam("password") String password,@RequestParam("facebookId") String facebookId) {

        LoginRequest request = new LoginRequest(email, password, facebookId);

        UserBusiness userBusiness = UserBusinessImpl.getInstance();

        return userBusiness.login(request);

    }
}

    <?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"
        xmlns:jee="http://www.springframework.org/schema/jee"
       xsi:schemaLocation="http://www.springframework.org/schema/beans                         http://www.springframework.org/schema/beans/spring-beans-3.1.xsd                        http://www.springframework.org/schema/context                           http://www.springframework.org/schema/context/spring-context-3.1.xsd                        http://www.springframework.org/schema/mvc                           http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
http://www.springframework.org/schema/jee                          http://www.springframework.org/schema/jee/spring-jee-3.0.xsd">  


    <bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" />
    <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />

    <bean id="jsonViewResolver" class="org.springframework.web.servlet.view.json.MappingJacksonJsonView" />
    <bean id="viewResolver" class="org.springframework.web.servlet.view.BeanNameViewResolver" />


    <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
        <property name="messageConverters">
            <list>
                <ref bean="jsonConverter" />
            </list>
        </property>
    </bean>

    <bean id="jsonConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
    <property name="supportedMediaTypes" value="application/json" />
    </bean> 


    <bean name="abcController" class="com.abc.def.controller.ABCController" />  

    <mvc:annotation-driven />
</beans>

这就是我如何尝试使用RestTemplate调用服务器，

<bean id="restTemplate" class="org.springframework.web.client.RestTemplate">
    <!-- <constructor-arg ref="httpClientFactory"/> -->

    <property name="messageConverters">
        <list>
            <bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
               <property name="objectMapper">
                    <ref bean="JacksonObjectMapper" />
               </property>
            </bean>

        </list>
    </property>
</bean>

    <bean id="JacksonObjectMapper" class="org.codehaus.jackson.map.ObjectMapper" />

这就是我如何使用它（用于测试）

ApplicationContext applicationContext = new ClassPathXmlApplicationContext("root-context.xml");
     RestTemplate twitter = applicationContext.getBean("restTemplate", RestTemplate.class);

     MultiValueMap<String, String> map = new LinkedMultiValueMap<String, String>();
    map.add("email", "[e-mail]");
     map.add("password", "abc");
     map.add("facebookId", null);

    HttpEntity<LoginResponse> response= twitter.exchange("https://abc.com/Rest/api/user/authenticate", HttpMethod.POST, map, LoginResponse.class);

我的登录响应类及其子类，

null

null

 with getters and setters

}

null

  private Integer userId; 
  private String email;   
  private Integer status;     
  private String name;

        with getters and setters
}

null

公共类BaseResponse{
受保护字符串StatusCode；

    with getter and setter }

我的问题是，1。为什么调用服务器时会出现此错误

信息:org.springframework.beans.factory.support.defaultListableBeanFactory-在org.springframework.beans.factory.support.defaultListableBeanFactory@63de8f2d:定义beans[restTemplate,JacksonObjectMapper]；工厂层次结构的根警告：org.springframework.web.client.resttemplate-对“https://abc.com/rest/api/user/authenticate”的POST请求导致400（错误请求）；调用线程“main”org.springframework.web.client.HttpClientRoreXception：400在org.springframework.web.client.defaultResponseerrorHandler.handleError(DefaultResponseerer.java:90)在org.springframework.web.client.restTemplate.java:494)在org.springframework.web.client.restTemplate.doExecute(restTemplate.java:451)

2.如何将json响应映射到java LoginResponse

Answer 1

您可能必须将content-type和accept标头添加到请求中。

将响应映射到LoginResponse可以像这样直接完成

LoginResponse lResponse = response.getBody();    

或者，如果您正在使用RESTTemplate.PostForObject()，则reponse将采用LoginResponse的形式