使用JSon进行RestTemplate POST

时间:2012-09-06 09:42:33

标签: resttemplate

再次寻求专家的帮助/指导,

我的问题是,我需要创建动态网站,它调用restfull服务器来获取数据,所有请求都是POST并返回json对象。我想使用Spring RestTemplate来调用服务器。我的服务器工作正常,这意味着目前一些Android和Apple应用程序连接到相同的API,它们工作正常。但是,当我尝试使用RestTemplate连接到服务器时,它会出现一些错误

  

org.springframework.web.client.HttpClientErrorException:400 Bad Request

这是我的服务器,

@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);

    }
}

这是我的服务器的春天配置,

    <?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>

这是我尝试使用RestTemplate调用服务器的方法,

<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", "x1@test.com");
     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

  1. LoginResponse
  2. 公共类LoginResponse扩展了BaseResponse {
       私有LoginBase数据;    与吸气剂和二传手 }

    1. 登录基地
    2.   
          

      public class LoginBase {           私有字符串标记;
                  私人用户用户;

       with getters and setters
      
      }
      
        
      1. 用户
      2.   

        公共类用户{

          private Integer userId; 
          private String email;   
          private Integer status;     
          private String name;
        
                with getters and setters
        }
        
        1. 最后是BaseResponse
        2.   

          公共类BaseResponse {
                      protected String statusCode;

              with getter and setter }
          

          我的问题是, 1.当我呼叫服务器时,为什么会出现此错误

            

          INFO:org.springframework.beans.factory.support.DefaultListableBeanFactory - 在org.springframework.beans.factory.support.DefaultListableBeanFactory@63de8f2d中预先实例化单例:定义bean [restTemplate,JacksonObjectMapper];工厂层级的根   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);调用错误处理程序   线程“main”中的异常org.springframework.web.client.HttpClientErrorException:400 Bad Request       at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:90)       在org.springframework.web.client.RestTemplate.handleResponseError(RestTemplate.java:494)       在org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:451)

          2。我如何将json响应映射到java LoginResponse

1 个答案:

答案 0 :(得分:0)

您可能需要添加内容类型并接受请求的标头。

将响应映射到LoginResponse可以像这样直接完成

LoginResponse lResponse = response.getBody();    

或者如果您使用的是restTemplate.postForObject(),则响应将采用LoginResponse的形式