Spring 引导休息控制器未将请求主体转换为自定义对象

Question

我有 spring 使用 spring rest controller 的启动应用程序。这是控制器，下面是响应。我正在使用邮递员工具向该控制器发送请求。我发送的内容类型为 application/json

    @RequestMapping(value = "/test", method = RequestMethod.POST)
public String test(@RequestBody WebApp webapp, @RequestBody String propertyFiles, @RequestBody String) {
    System.out.println("webapp :"+webapp);
    System.out.println("propertyFiles :"+propertyFiles);
    System.out.println("propertyText :"+propertyText);

    return "ok good";
}

2018-03-21 12:18:47.732 WARN 8520 --- [nio-8099-exec-3] .w.s.m.s.DefaultHandlerExceptionResolver：处理程序执行引起的已解决异常：org.springframework.http.converter.HttpMessageNotReadableException : I/O 读取输入消息时出错；嵌套异常是 java.io.IOException: Stream closed

这是我的邮递员请求

{
"webapp":{"webappName":"cavion17","path":"ud1","isQA":true},
"propertyFiles":"vchannel",
"propertytText":"demo property"}

我尝试删除 RequestBody 注释，然后能够访问该服务，但收到的参数对象为空。

所以请建议如何在 restcontroller 中检索对象？

Answer 1

您不能在 Spring 中使用多个 @RequestBody 注释。您需要将所有这些包装在一个对象中。

有些像这样

// some imports here
public class IncomingRequestBody {
    private Webapp webapp;
    private String propertryFiles;
    private String propertyText;

    // add getters and setters here
}

在你的控制器中

@RequestMapping(value = "/test", method = RequestMethod.POST)
public String test(@RequestBody IncomingRequestBody requestBody) {
    System.out.println(requestBody.getPropertyFiles());
    // other statement
    return "ok good";
}

在这里阅读更多 Passing multiple variables in @RequestBody to a Spring MVC controller using Ajax

Answer 2

根据您提供的样本邮递员负载，您将需要：

public class MyObject {

    private MyWebapp  webapp;
    private String propertyFiles;
    private String propertytText;

    // your getters /setters here as needed
}

和

public class MyWebapp {
    private String webappName;
    private String path;
    private boolean isQA;

    // getters setters here
}

然后在您的控制器上将其更改为：

@RequestMapping(value = "/test", method = RequestMethod.POST)
public String test(@RequestBody MyObject payload) {
    // then access the fields from the payload like
    payload.getPropertyFiles();

    return "ok good";
}

Spring 引导休息控制器未将请求主体转换为自定义对象

Spring boot rest controller not converting request body to custom object

java

spring

spring-data-rest

spring-boot