调试RestTemplate发布请求

Question

我想POST以一个REST-API使用RestTemplate在Spring.这是我正在使用的代码:

//Code to Post data using Rest Template
List<UserVO> userList = getUsers();
RestRequestVO submitRequestData = new RestRequestVO();
submitRequestData.setAction("update");
submitRequestData.setType("user");
submitRequestData.setItems(items);
ResponseEntity<String> resposne = restTemplate.postForEntity(putUserUrl, submitRequestData, String.class);
String message = resposne.getBody();

//The structure of class
public class RestRequestVO {
private String action;
private String type;
private List<UserVO> items;

//Setters and Getters
}

//Expected JSON
{
"action"="update",
"type"="user",
"items"=[
    { //user1 }, {//user2} ....
]
}

我需要正确调试它,看看按restTemplate.postForEntity(putUserUrl, submitRequestData, String.class);行发送到REST服务器的确切JSON是什么.

我在用Eclipse.我已经尝试逐行调试代码.我也尝试过设置日志级别Debug.

遵循注释中给出的步骤后更新

下面是我的log4j.xml,我看不到任何与REST模板相关的http日志.如果我犯了一些错误,请告诉我.

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j='http://jakarta.apache.org/log4j/'>

    <appender name="CA" class="org.apache.log4j.ConsoleAppender">
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="%d{dd MMM yyyy HH:mm:ss,SSS} - %5t - %5p - %l  - %m%n" />
        </layout>
    </appender>

    <appender name="FA" class="org.apache.log4j.FileAppender">
        <param name="File" value="cw.log"/>
        <param name="Threshold" value="DEBUG"/>
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="%d{dd MMM yyyy HH:mm:ss,SSS} - %5t - %5p - %l  - %m%n" />
        </layout>
    </appender>

    <logger name="log4j.logger.httpclient.wire" additivity="false" > 
    <level value="DEBUG" /> 
    <appender-ref ref="CA"/> 
    </logger>

    <root>
        <level value="Debug" />
        <appender-ref ref="CA" />
    </root>

</log4j:configuration>

我打算在将POJ发送到REST POST URL之前打印从POJO创建的JSON.

Answer 1

您可以AbstractHttpMessageConverter在public final void write(final T t, MediaType contentType, HttpOutputMessage outputMessage)方法结束时设置断点,并进行评估outputMessage.getBody()