make all response return as json format

src/love/sola/netsupport/api/GetUser.java

@@ -1,6 +1,8 @@
 package love.sola.netsupport.api;
 
 import com.google.gson.Gson;
+import love.sola.netsupport.enums.ResponseCode;
+import love.sola.netsupport.pojo.User;
 import love.sola.netsupport.sql.SQLQuery;
 
 import javax.servlet.ServletConfig;
@@ -21,9 +23,12 @@ import java.io.PrintWriter;
 @WebServlet(name = "GetUser",urlPatterns = "/api/getuser",loadOnStartup = 1)
 public class GetUser extends HttpServlet {
 
+	private Gson gson = null;
+
 	@Override
 	public void init(ServletConfig config) throws ServletException {
 		super.init(config);
+		gson = new Gson();
 	}
 
 	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
@@ -33,15 +38,28 @@ public class GetUser extends HttpServlet {
 	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
 		request.setCharacterEncoding("utf-8");
 		response.setCharacterEncoding("utf-8");
+		response.addHeader("Content-type", "text/json;charset=utf-8");
 		PrintWriter out = response.getWriter();
+		String id = request.getParameter("id");
 		String name = request.getParameter("name");
-		if (name == null) {
-			response.addHeader("Content-type", "text/plain;charset=utf-8");
-			out.println("Username required.");
+		if ((id == null || id.isEmpty()) && (name == null || name.isEmpty())) {
+			out.println(gson.toJson(new Response(ResponseCode.PARAMETER_REQUIRED)));
+		} else if (id != null) {
+			try {
+				User u = SQLQuery.getUserById(Integer.parseInt(id));
+				if (u == null)
+					out.println(gson.toJson(new Response(ResponseCode.USER_NOT_FOUND)));
+				else
+					out.println(gson.toJson(new Response(ResponseCode.OK, u)));
+			} catch (NumberFormatException e) {
+				out.println(gson.toJson(new Response(ResponseCode.ILLEGAL_PARAMETER)));
+			}
 		} else {
-			response.addHeader("Content-type", "text/json;charset=utf-8");
-			Gson gson = new Gson();
-			out.println(gson.toJson(SQLQuery.getUserFromName(name)));
+			User u = SQLQuery.getUserByName(name);
+			if (u == null)
+				out.println(gson.toJson(new Response(ResponseCode.USER_NOT_FOUND)));
+			else
+				out.println(gson.toJson(new Response(ResponseCode.OK, u)));
 		}
 		out.close();
 	}

src/love/sola/netsupport/api/Response.java

@@ -0,0 +1,29 @@
+package love.sola.netsupport.api;
+
+import lombok.AllArgsConstructor;
+import love.sola.netsupport.enums.ResponseCode;
+
+/**
+ * ***********************************************
+ * Created by Sola on 2015/11/5.
+ * Don't modify this source without my agreement
+ * ***********************************************
+ */
+@AllArgsConstructor
+public class Response {
+
+	public int code;
+	public String info;
+	public Object result;
+
+	public Response(ResponseCode code) {
+		this(code, null);
+	}
+
+	public Response(ResponseCode code, Object result) {
+		this.code = code.id;
+		this.info = code.info;
+		this.result = result;
+	}
+
+}

src/love/sola/netsupport/enums/ISPType.java

@@ -11,7 +11,6 @@ import java.util.Map;
  */
 public enum ISPType {
 
-
 	TELECOM("Telecom", 1),
 	UNICOM("Unicom", 2),
 	CHINAMOBILE("ChinaMobile", 3),;
@@ -53,4 +52,5 @@ public enum ISPType {
 	public String toString() {
 		return name;
 	}
+
 }

src/love/sola/netsupport/enums/ResponseCode.java

@@ -0,0 +1,47 @@
+package love.sola.netsupport.enums;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * ***********************************************
+ * Created by Sola on 2015/11/6.
+ * Don't modify this source without my agreement
+ * ***********************************************
+ */
+public enum ResponseCode {
+
+	OK(0, "OK"),
+	PARAMETER_REQUIRED(-1, "Parameter Required"),
+	ILLEGAL_PARAMETER(-2, "Illegal parameter"),
+	USER_NOT_FOUND(-11, "User not found"),
+	;
+
+	private static final Map<Integer, ResponseCode> ID_MAP = new HashMap<>();
+
+	static {
+		for (ResponseCode type : values()) {
+			if (type.id > 0) {
+				ID_MAP.put(type.id, type);
+			}
+		}
+	}
+
+	public final String info;
+	public final int id;
+
+	ResponseCode(int id, String info) {
+		this.info = info;
+		this.id = id;
+	}
+
+	public static ResponseCode fromId(int id) {
+		return ID_MAP.get(id);
+	}
+
+	@Override
+	public String toString() {
+		return info;
+	}
+
+}

src/love/sola/netsupport/sql/SQLQuery.java

@@ -37,7 +37,11 @@ public class SQLQuery {
 		}
 	}
 
-	public static User getUserFromName(String name) {
+	public static void free(Connection conn) {
+		if (conn != null) try { conn.close(); } catch (SQLException e) { }
+	}
+
+	public static User getUserByName(String name) {
 		Connection conn = null;
 		try {
 			conn = ds.getConnection();
@@ -54,10 +58,31 @@ public class SQLQuery {
 			}
 		} catch (SQLException e) {
 		} finally {
-			if (conn != null) try { conn.close(); } catch (SQLException e) { }
+			free(conn);
 		}
 		return null;
 	}
 
+	public static User getUserById(int id) {
+		Connection conn = null;
+		try {
+			conn = ds.getConnection();
+			PreparedStatement ps = conn.prepareStatement("SELECT * FROM user_info WHERE id=?");
+			ps.setInt(1, id);
+			ResultSet rs = ps.executeQuery();
+			if (rs.next()) {
+				return new User(rs.getInt(COLUMN_ID),
+						rs.getString(COLUMN_NAME),
+						rs.getLong(COLUMN_STUDENT_ID),
+						rs.getString(COLUMN_NET_ACCOUNT),
+						ISPType.fromId(rs.getInt(COLUMN_ISP)),
+						rs.getString(COLUMN_WECHAT));
+			}
+		} catch (SQLException e) {
+		} finally {
+			free(conn);
+		}
+		return null;
+	}
 
 }

src/love/sola/netsupport/wechat/handler/HandlerList.java

@@ -1,5 +1,11 @@
 package love.sola.netsupport.wechat.handler;
 
+import me.chanjar.weixin.mp.api.WxMpMessageHandler;
+import me.chanjar.weixin.mp.api.WxMpMessageRouter;
+
+import java.util.HashMap;
+import java.util.Map;
+
 /**
  * ***********************************************
  * Created by Sola on 2015/11/5.
@@ -7,4 +13,16 @@ package love.sola.netsupport.wechat.handler;
  * ***********************************************
  */
 public class HandlerList {
+
+	public static Map<String, Class<? extends WxMpMessageHandler>> handlers = new HashMap<>();
+
+	static {
+		handlers.put("Register", RegisterHandler.class);
+	}
+
+	public void init(WxMpMessageRouter router) {
+
+	}
+
+
 }