此文只是用了GET方法請(qǐng)求，所有POST方法沒有貼出來了，下次使用另外更新。
對(duì)應(yīng)接口是本人的本地服務(wù)器，所以別人無法訪問，此文主要記錄接口的寫法以及細(xì)節(jié)。

字符編碼

//設(shè)置UTF-8編碼
response.setContentType("text/html; charset=UTF-8");
//中文字符轉(zhuǎn)譯
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("uth-8");

登錄

login1：http://192.168.1.101:8080/myweb/servlet/myservlet?name=rr&password=123
login2：http://192.168.2.100:8080/myweb/servlet/myservlet?name=rr&password=123

//登錄接口實(shí)現(xiàn)方法
public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
    response.setContentType("text/html; charset=UTF-8");
    PrintWriter out = response.getWriter();
    //字符轉(zhuǎn)譯
    request.setCharacterEncoding("utf-8");
    response.setCharacterEncoding("uth-8");
    //獲取name參數(shù)的值
    String name = request.getParameter("name").toString();
    //獲取password參數(shù)的值
    String password = request.getParameter("password").toString();
    //判斷
    if (name.equals("rr") && password.equals("123")) {
        returnmsg(out, 1, "登錄成功!");
    } else {
        System.out.println(name + password);
        returnmsg(out, 2, "登錄失敗,用戶名或密碼錯(cuò)誤!");
    }
}
/**
 * 返回參數(shù)
 * @param out
 * @param code
 * @param message
 * @throws UnsupportedEncodingException 
 */
public void returnmsg(PrintWriter out, int code, String message) {
    Map<String, Object> msg = new HashMap<String, Object>();
    msg.put("code", code);
    msg.put("msg", message);
    //轉(zhuǎn)為json格式，先要導(dǎo)入gson包
    out.print(new Gson().toJson(msg));
}

返回結(jié)果：

{
    "code":1,
    "msg":"登錄成功"
}

用戶列表

adminList1：http://192.168.1.101:8080/myweb/servlet/adminlist
adminList2：http://192.168.2.100:8080/myweb/servlet/adminlist

public class adminlist extends HttpServlet {

    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        //UTF-8
        response.setContentType("text/html; charset=UTF-8");
        //字符轉(zhuǎn)譯
        request.setCharacterEncoding("utf-8");
        response.setCharacterEncoding("uth-8");
        PrintWriter out = response.getWriter();
        out.print(returnAdminlist());
    }
    /**
     *  將生成的數(shù)據(jù)抽成一個(gè)方法，并返回生成的數(shù)據(jù)
     */
    public List<String> returnAdminlist() {
        List<String> mapList = new ArrayList<String>();
        List<String> address = new ArrayList<String>();
        address.add("杭州");
        address.add("北京");
        address.add("深圳");
        address.add("上海");
        address.add("耒陽");
        for (int i = 0; i < 10; i++) {
            Map< String, String> adminlist = new HashMap<String, String>();
            adminlist.put("admin", "小榮兒" + (i + 1));
            adminlist.put("address", address.get(new Random().nextInt(5)));
            adminlist.put("tel", randomNum());
            mapList.add(new Gson().toJson(adminlist));
        }
        return mapList;
    }
    /**
     *  隨機(jī)生成一個(gè)9以內(nèi)的數(shù)字，并拼湊成10位數(shù)字
     */
    public String randomNum() {
        String randString = "";
        for (int i = 0; i < 10; i++) {
            Random random = new Random();
            randString += random.nextInt(9);
        }
        return "1" + randString;
    }
}

返回結(jié)果：

[
    {
        "address":"深圳",
        "admin":"小榮兒1",
        "tel":"14178070375"
    }, 
    {
        "address":"北京",
        "admin":"小榮兒2",
        "tel":"18828271185"
    }
    .....
]