将xml发布到spring REST端点不会被解组到相关的Java对象中

我有一个给定xsd的项目.我使用xjc编译器生成Java类.然后,我用XmlRootElement属性注释该类.我已经在AnnotationMethodHandlerAdapter中用Jaxb2编组/解组bean配置了sevlet.当我发送不带名称空间的xml时,出现415错误.

源代码如下
文件-web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>Test</display-name>
  <servlet>
    <servlet-name>dispatcher</servlet-name>
    <servlet-class> org.springframework.web.servlet.DispatcherServlet </servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>dispatcher</servlet-name>
    <url-pattern>/rest/*</url-pattern>
  </servlet-mapping>
</web-app>

文件-dispatcher-servlet.xml

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

    <context:component-scan base-package="com.test.endpoints" />

    <tx:annotation-driven />

    <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
        <property name="messageConverters">
          <list> 
            <ref bean="marshallingHttpMessageConverter"/>
          </list>
        </property>
    </bean>
    <bean id="marshallingHttpMessageConverter" 
          class="org.springframework.http.converter.xml.MarshallingHttpMessageConverter">
           <constructor-arg ref="jaxb2Marshaller" />
    </bean> 
    <bean id="jaxb2Marshaller" class="org.springframework.oxm.jaxb.Jaxb2Marshaller">
        <property name="classesToBeBound">
            <list>
                <value>com.test.users.User</value>
                <value>com.test.users.Users</value>
            </list>
        </property>
    </bean>
    <!-- Should be defined last! -->
<!--    <mvc:annotation-driven />-->
</beans>

文件-user.xsd
    
    

    <element name="users">
        <complexType>
            <sequence>
                <element name="user" type="tns:user" minOccurs="0"
                    maxOccurs="unbounded" />
            </sequence>
        </complexType>
    </element>
    <complexType name="user">
        <sequence>
            <element name="id" type="int" />            
            <element name="email" type="string"></element>
            <element name="first_name" type="string"></element>
            <element name="last_name" type="string"></element>          
        </sequence>
    </complexType>
</schema>

使用此命令为上述xsd生成Java类.

xjc -p com.test.users ..\xsd\user.xsd

该命令的输出是

parsing a schema...
compiling a schema...
com\test\users\ObjectFactory.java
com\test\users\User.java
com\test\users\Users.java
com\test\users\package-info.java

用@XmlRootElement(name =“ user”)注释的User.java.

文件-UserService.java

package com.test.endpoints;

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;

import com.test.users.User;

@Controller
@RequestMapping("/users")
public class UserService {
    @RequestMapping(value="/new", method=RequestMethod.POST)
    @ResponseBody
    public User createUser(@RequestBody User user) {
        System.out.println(user.getFirstName());

        return user;
    }
}

使用curl命令测试了REST API

curl -X POST -HContent-type:application/xml -HAccept:application/xml  --data "<?xml version="1.0" encoding="UTF-8"?><user><id>1</id><email>email@email.com</email><first_name>first_name</first_name><last_name>last_name</last_name></user>" http://localhost:8080/Test/rest/users/new

输出是

The request sent by the client was syntactically incorrect ()

有人可以指出我要去哪里.

谢谢

解决方法:

我也遇到了同样的问题.这是我的Controller方法的样子：

@RequestMapping(method=RequestMethod.POST, value="/users/create",
        headers="Accept=application/xml")
public @ResponseBody User createUser(@RequestBody User user) {
    return user;
}

基本上,我只是返回用户对象作为概念验证,以确保POST正常工作.但是,我一直遇到“语法错误”的消息.实际更新代码以检索有效的User对象后,如下所示：

@RequestMapping(method=RequestMethod.POST, value="/users/create",
        headers="Accept=application/xml")
public @ResponseBody User createUser(@RequestBody User user) {
    userService.createUser(user);
    // do work
    User newUser = userService.getUserById(user.getId());
    return newUser;
}

它开始正常工作.

我使用以下CURL命令测试了REST API：

curl -X POST -HContent-type:application/xml -HAccept:application/xml --data "<user><username>Quinnster</username><password>password</password></user>" http://localhost:8080/api/users/create

使用不同的API列出用户,我能够验证我的新用户是否正确创建.

同样,不确定这是否与您遇到的问题完全相同,但这为我解决了这一问题.

谢谢,
奎因

标签：jaxb2,jaxb,model-view-controller,spring,java
来源： https://codeday.me/bug/20191102/1994393.html