Retrofit进行网络请求,如何解析XML

Question

最近在学习一个项目"开源中国",遇到了些问题,原因是一些网络请求返回的数据是XML.
因为之前遇到的都是json多,很少解析xml.
通过翻阅资料得知现在的网络访问比较流行Retrofit,而且带有一个SimpleXmlConverterFactory转换器可以解析xml得到一个javabean对象.
可能是我用gsonorxmlformat插件生成的bean有问题,enqueue回调一直走失败方法.下面是代码,请各位前辈指点指点

java代码:

public class MainActivity extends AppCompatActivity {

    private Retrofit mRetrofit;
    private osChinaApp mOsChinaApp;
    private Call<LoginUserBean> mCall;
    private EditText mEtUsername;
    private EditText mEtPwd;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mEtUsername = (EditText) findViewById(R.id.et_username);
        mEtPwd = (EditText) findViewById(R.id.et_pwd);
    }

    public void login(View view) {
        initData(mEtUsername.getText().toString().trim(), mEtPwd.getText().toString().trim());
    }

    private void initData(String username, String psw) {
        mRetrofit =
                new Retrofit.Builder()
                        .baseUrl("http://www.oschina.net")
                        .addConverterFactory(SimpleXmlConverterFactory.create())
                        .build();

        mOsChinaApp = mRetrofit.create(osChinaApp.class);

        mCall = mOsChinaApp.getResponseXML(1, username, psw);
        mCall.enqueue(new Callback<LoginUserBean>() {
            @Override
            public void onResponse(Call<LoginUserBean> call, Response<LoginUserBean> response) {
                Toast.makeText(getApplication(), "ok", Toast.LENGTH_SHORT).show();
                Log.e("123", response.body().getOschina().getUser().getName());
            }

            @Override
            public void onFailure(Call<LoginUserBean> call, Throwable t) {
                Toast.makeText(getApplication(), "gg", Toast.LENGTH_SHORT).show();
                t.printStackTrace();
            }
        });
    }

    public interface osChinaApp {
        @GET("/api/login_validate")
        Call<LoginUserBean> getResponseXML(@Query("keep_login") int pager, @Query("username") String username, @Query("pwd") String pwd);
    }

}

javabean:

public class LoginUserBean {
    /**
     * result : {"errorMessage":"登录成功","errorCode":1}
     * user : {"uid":6666666,"score":0,"followers":0,"gender":1,"name":"Wecher","location":"广东 广州","portrait":"","favoritecount":0,"fans":0}
     * notice : {"newLikeCount":0,"reviewCount":0,"newFansCount":0,"msgCount":1,"atmeCount":0}
     */

    private OschinaBean oschina;

    public OschinaBean getOschina() {
        return oschina;
    }

    public void setOschina(OschinaBean oschina) {
        this.oschina = oschina;
    }

    public static class OschinaBean {
        /**
         * errorMessage : 登录成功
         * errorCode : 1
         */

        private ResultBean result;
        /**
         * uid : 6666666
         * score : 0
         * followers : 0
         * gender : 1
         * name : Wecher
         * location : 广东 广州
         * portrait :
         * favoritecount : 0
         * fans : 0
         */

        private UserBean user;

        public ResultBean getResult() {
            return result;
        }

        public void setResult(ResultBean result) {
            this.result = result;
        }

        public UserBean getUser() {
            return user;
        }

        public void setUser(UserBean user) {
            this.user = user;
        }

        public static class ResultBean {
            private String errorMessage;
            private int errorCode;

            public String getErrorMessage() {
                return errorMessage;
            }

            public void setErrorMessage(String errorMessage) {
                this.errorMessage = errorMessage;
            }

            public int getErrorCode() {
                return errorCode;
            }

            public void setErrorCode(int errorCode) {
                this.errorCode = errorCode;
            }
        }

        public static class UserBean {
            private int uid;
            private int score;
            private int followers;
            private int gender;
            private String name;
            private String location;
            private String portrait;
            private int favoritecount;
            private int fans;

            public int getUid() {
                return uid;
            }

            public void setUid(int uid) {
                this.uid = uid;
            }

            public int getScore() {
                return score;
            }

            public void setScore(int score) {
                this.score = score;
            }

            public int getFollowers() {
                return followers;
            }

            public void setFollowers(int followers) {
                this.followers = followers;
            }

            public int getGender() {
                return gender;
            }

            public void setGender(int gender) {
                this.gender = gender;
            }

            public String getName() {
                return name;
            }

            public void setName(String name) {
                this.name = name;
            }

            public String getLocation() {
                return location;
            }

            public void setLocation(String location) {
                this.location = location;
            }

            public String getPortrait() {
                return portrait;
            }

            public void setPortrait(String portrait) {
                this.portrait = portrait;
            }

            public int getFavoritecount() {
                return favoritecount;
            }

            public void setFavoritecount(int favoritecount) {
                this.favoritecount = favoritecount;
            }

            public int getFans() {
                return fans;
            }

            public void setFans(int fans) {
                this.fans = fans;
            }
        }
    }
}

请求回来的xml:

<?xml version="1.0" encoding="UTF-8"?><oschina>
    <result>
    <errorCode>1</errorCode>
    <errorMessage><![CDATA[登录成功]]></errorMessage>
  </result>
    <user>
    <uid>6666666</uid>
    <location><![CDATA[广东 广州]]></location>
    <name><![CDATA[Wecher]]></name>
    <followers>0</followers>
    <fans>0</fans>
    <score>0</score>
    <portrait></portrait>
    <favoritecount>0</favoritecount>
    <gender>1</gender>
  </user>
  <notice>
    <atmeCount>0</atmeCount>
    <msgCount>1</msgCount>
    <reviewCount>0</reviewCount>
    <newFansCount>0</newFansCount>
    <newLikeCount>0</newLikeCount>
</notice>
</oschina>

试过修改接口泛型为String,可以走onResponse回调...