【发布时间】:2015-04-17 10:25:07
【问题描述】:
我在主题行中提到了异常。您能否解释一下出了什么问题:
package mvc;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
@Controller
@RequestMapping("/req")
public class Req {
@RequestMapping(method = RequestMethod.GET)
@ResponseBody
public String get(@RequestBody String body) {
return body;
}
}
SpringMVC-servlet.xml
<?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:util="http://www.springframework.org/schema/util"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">
<!--It tells the Spring framework to look for annotations and then do appropriate dependency injections.-->
<context:annotation-config/>
<!--used to provide base package to scan components-->
<context:component-scan base-package="mvc"/>
<mvc:annotation-driven>
<mvc:message-converters>
<bean class="org.springframework.http.converter.StringHttpMessageConverter"/>
</mvc:message-converters>
</mvc:annotation-driven>
</beans>
当我尝试访问http://localhost:8080/SpringMVC/req
HTTP Status 400 -
type Status report
message
description The request sent by the client was syntactically incorrect ().
Apache Tomcat/7.0.16
请帮我找出这个问题的原因。
谢谢, 沙迪普
【问题讨论】:
-
您没有在 GET 请求正文 (it doesn't make much sense, anyway) 中发送任何内容,因此 Spring 无法通过
@RequestBody绑定任何内容。您希望在控制器代码中的body值中看到什么? -
我想看看 RequestBody 是如何工作的。您的意思是 RequestBody 注释不适用于 GET?我会尝试 POST 方法。
-
使用 POST 而不是 GET。现在您没有在 HTTP 请求正文中提供任何数据。
-
POST 工作正常
-
请随意接受下面的答案:)
标签: spring model-view-controller