学习webservice之cxf：cxf处理map等复杂类型

Posted 2020-12-02 十黎九夏

Caused by: com.sun.xml.internal.bind.v2.runtime.IllegalAnnotationsException: 1 counts of IllegalAnnotationExceptions
java.util.List是接口, 而 JAXB 无法处理接口。
    this problem is related to the following location:
        at java.util.List
        at private java.util.Map com.rg2.webservice.jaxws_asm.GetrolesResponse._return
        at com.rg2.webservice.jaxws_asm.GetrolesResponse

在cxf处理map类型的时候需要在接口上加注解，否则会报以上错误。

@WebService
public interface HelloWorld {

    public String say(String str);
    
    public List<Role> getRoleByUser(User user);
    
    /**
     * 获取所有用户对应的角色
     * @return
     */
    @XmlJavaTypeAdapter(MapAdapter.class)
    public Map<String, List<Role>> getroles();
}

其中MapAdapter单独写

package com.rg2.adapter;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.xml.bind.annotation.adapters.XmlAdapter;

import com.rg2.entity.MyRole;
import com.rg2.entity.Role;

public class MapAdapter extends XmlAdapter<MyRole[], Map<String, List<Role>>>{

    /**
     * 适配转换MyRole[] --> Map<String, List<Role>>
     */
    @Override
    public Map<String, List<Role>> unmarshal(MyRole[] v) throws Exception {
        Map<String, List<Role>> map = new HashMap<String,List<Role>>();
        for (int i = 0; i < v.length; i++) {
            MyRole role = v[i];
            map.put(role.getKey(), role.getValue());
        }
        return map;
    }

    /**
     * 适配转换Map<String, List<Role>> --> 适配转换MyRole[]
     */
    @Override
    public MyRole[] marshal(Map<String, List<Role>> v) throws Exception {
        MyRole[] roles = new MyRole[v.size()];
        int i = 0;
        for (String key : v.keySet()) {
            roles[i] = new MyRole();
            roles[i].setKey(key);
            roles[i].setValue(v.get(key));
            i++;
        }
        return roles;
    }

}

package com.rg2.entity;

import java.util.List;

/**
 * 自定义实体cxf能接受
 * @author Administrator
 *
 */
public class MyRole {

    private String key;
    private List<Role> value;
    public String getKey() {
        return key;
    }
    public void setKey(String key) {
        this.key = key;
    }
    public List<Role> getValue() {
        return value;
    }
    public void setValue(List<Role> value) {
        this.value = value;
    }
}

 启动server方法

没有报错,打开浏览器

如之前写的那样，将客户端使用wsdl2自动生成代码

然后通过Client类调用服务端接口

package com.rg2.webservice;

import java.util.List;

public class Client {

    public static void main(String[] args) {
        HelloWorldService service = new HelloWorldService();
        HelloWorld helloWorldPort = service.getHelloWorldPort();

        MyRoleArray getroles = helloWorldPort.getroles();
        List<MyRole> roleList = getroles.item;
        for (int i = 0; i < roleList.size(); i++) {
            MyRole my = roleList.get(i);
            System.out.print(my.key + ":");
            for (Role role : my.value) {
                System.out.print(role.getId()+","+role.getRoleName());
            }
            System.out.println("===============");
        }
    }

}

运行结果为：