400 对休息应用程序/xml 的错误请求

Question

我正在使用 jersey 框架开发简单的 rest web 服务。书面的@POST 方法，它消耗和产生{MediaType.APPLICATION_JSON,MediaType.APPLICATION_XML}。使用 chrome Advance rest 客户端调用 Web 服务。对于以下应用程序/json 请求，Webservices 正在按预期工作

{"noSave": "Save", "dateCre":"14/12/2014"} 

但收到以下应用程序/xml 请求的 400 个错误请求

<?xml version="1.0" encoding="UTF-8">
<noSave>Save</noSave>
<dateCre>14/12/2014</dateCre>

代码中没有编译错误。感谢您对解决以下问题的任何帮助。下面是我写的代码

请求对象：

import java.math.BigDecimal;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlType;

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "Creation", propOrder = {

})
public class Creation {

    @XmlElement(required = true)
    protected String noSave;
    @XmlElement(required = true)
    protected String dateCre;

    public String getNoSave() {
        return noSave;
    }

    public void setNoSave(String value) {
        this.noSave = value;
    }

    public String getDateCre() {
        return dateCre;
    }

    public void setDateCre(String value) {
        this.dateCre = value;
    }
}

响应对象：

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlType;
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "MyResponse", propOrder = {

})
public class MyResponse {

    @XmlElement(required = true)
    protected String resString;
    public String getResString() {
        return resString;
    }
    public void setResString(String value) {
        this.resString = value;
    }
}

休息网络服务：

import javax.validation.Valid;
import javax.ws.rs.Consumes;
import javax.ws.rs.POST;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;

@Path("/create")
public class CreateRequest {

    @POST
    @Produces({  MediaType.APPLICATION_JSON,MediaType.APPLICATION_XML })
    @Consumes({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
    public Response createReq( @Valid Creation request)
    {
        System.out.println(" Request "+request.getNoSave());
        MyResponse result = new MyResponse();
        result.setResString(" Created with Number 123");
        return Response.ok(result).build();
    }
}

下面是 chrome rest 客户端出现的错误

Status 400 Bad Request. Loading time: 4250
Request headers User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like      Gecko) Chrome/39.0.2171.95 Safari/537.36
Origin: chrome-extension://hgmloofddffdnphfgcellkdfbfbjeloo
Content-Type: application/xml 
Accept: */*
Accept-Encoding: gzip, deflate
Accept-Language: en-GB,en-US;q=0.8,en;q=0.6
Response headers Server: Apache-Coyote/1.1 
Content-Type: text/html;charset=utf-8 
Content-Language: en 
Content-Length: 990 
Date: Tue, 13 Jan 2015 13:53:11 GMT 
Connection: close

我也试过下面的代码

@XmlRootElement(name="Creation")
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "Creation", propOrder = {

})
public class Creation {

及以下 xml 请求。但是遇到同样的错误

<?xml version="1.0" encoding="UTF-8">
<Creation>
    <noSave>NoSave</noSave>
    <dateCre>14/12/2014</dateCre>
</Creation>

显示日志中的以下错误

javax.xml.bind.UnmarshalException: unexpected element (uri:"", local:"Creation"). Expected elements are <{http://check.com/rrs}Creation>

Answer 1

这个

<?xml version="1.0" encoding="UTF-8">
<noSave>Save</noSave>
<dateCre>14/12/2014</dateCre>

不是有效的 XML。 XML 文档应该只有 一个 根元素。对于您的 POJO 映射，根元素应该是 <Creation>。所以尝试一下

<?xml version="1.0" encoding="UTF-8"?>
<Creation>
    <noSave>sdfshd</noSave>
    <dateCre>3840389</dateCre>
</Creation>

您还应该将@XmlRootElement 添加到您的班级

@XmlRootElement(name = "Creation")
public class Creation {

MyResponse 也一样

@XmlRootElement(name = "MyResponse")
public class MyResponse {

使用 XML 你会得到回报

<MyResponse>
    ...
</MyResponse>

没有办法。这就是 XML 的工作原理。

---

更新

您的 xml 标头末尾还缺少 ?。

<?xml version="1.0" encoding="UTF-8"?>   // See the `?`. You are missing that

虽然标题甚至不是必需的。简单发送

<Creation>
    <noSave>sdfshd</noSave>
    <dateCre>3840389</dateCre>
</Creation>

我已经测试过了，效果很好

Answer 2

它可能试图将您的请求解析为 xml 文档。有效的 XML 文档必须只包含 1 个根节点。

http://en.m.wikipedia.org/wiki/Root_element