spring mvc 返回xml格式数据

1.问题 : 因为业务需要,需要发送xml格式的数据,使用spring mvc 自己解析,就不用费心去自己搞这些东西.

2.解决:

新建一个实体类,直接在实体类中添加注解即可,如下:

@xmlrootelement
@xmlaccessortype(xmlaccesstype.field)
public class xmltestbean {
    @xmlelement
    @xmlcdata
    private string username;
    @xmlelement
    private string password;
    @xmlelement
    private string name;
    
    public string getusername() {
        return username;
    }
    public void setusername(string username) {
        this.username = username;
    }
    public string getpassword() {
        return password;
    }
    public void setpassword(string password) {
        this.password = password;
    }
    public string getname() {
        return name;
    }
    public void setname(string name) {
        this.name = name;
    }
    @override
    public string tostring() {
        return "xmltestbean [username=" + username + ", password=" + password + ", name=" + name + "]";
    }
    
    
}

类上方添加:

@xmlrootelement
@xmlaccessortype(xmlaccesstype.field)

字段名添加:

@xmlelement

在controller类中返回即可:

@controller
@requestmapping("test")
public class testcontroller {
    
    @requestmapping("xml")
    @responsebody
    public xmltestbean gettestxml(){
        xmltestbean xml = new xmltestbean();
        xml.setusername("aa");
        xml.setpassword("bb");
        xml.setname("cc");
        return xml;
    }
    @requestmapping("getxml")
    public void getxml(@requestbody xmltestbean xml){
        system.out.println(xml);
    }
    

}

结果:

<?xml version="1.0" encoding="utf-8"?>
<xmltestbean>
    <username>
        <![cdata[aa]]>
    </username>
    <password>bb</password>
    <name>cc</name>
</xmltestbean>

 

补充:@xmlcdata注解的作用:可以让返回值中添加

<![cdata[]]>

 cdata 区段,可以不被xml解析器解析,但是需要在pom.xml添加

<dependency>
    <groupid>org.eclipse.persistence</groupid>
    <artifactid>eclipselink</artifactid>
    <version>2.5.0</version>
</dependency>

和在实体类的包下添加jaxb.properties文件,文件内容如下:

javax.xml.bind.context.factory=org.eclipse.persistence.jaxb.jaxbcontextfactory

 

只是解决了问题,但是原理这些还不懂,σ( ° △ °|||)︴,有机会再搞懂原理吧