親子登録の実装、友達登録画面へのユーザIDの表示の実装

DatabaseRegister.java

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+//同じディレクトリにmysqlのドライバ(mysql-connector-java-5.1.36)を置くこと
+import java.io.*;
+import java.sql.*;
+import java.text.*;
+
+//データベースへの位置情報登録を実行する
+public class DatabaseRegister{
+  //ここはメソッドで適宜変更
+  private String domain = "localhost";
+  private int port = 3306;
+  private String dbname = "enPiT2015_ITW";
+  private String user_name = "hoge";
+  private String password = "piyo";
+  private Connection conn = null;
+
+  DatabaseRegister(){//デフォルトコンストラクタ
+
+  }
+
+  //アドレス、ポート番号、データベース名を設定
+  public void setDatabaseInfo(String domain, int port, String dbname){
+    this.domain = domain;
+    this.port = port;
+    this.dbname = dbname;
+  }
+
+  //ユーザID、パスワードを指定
+  public void setDatabaseUserInfo(String user_name, String password){
+    this.user_name = user_name;
+    this.password = password;
+  }
+
+  public boolean connectDB(){
+    try{
+      Class.forName("com.mysql.jdbc.Driver").newInstance();
+      String url = "jdbc:mysql://" + this.domain + ":" + this.port + "/" + dbname;
+      this.conn = DriverManager.getConnection(url, this.user_name, this.password);
+      //System.out.println("接続に成功しました");
+      return true;
+    }
+    catch (Exception e){
+      e.printStackTrace();
+      return false;
+    }
+  }
+
+  //ユーザIDの存在を確認
+  public boolean exists(int user_id){
+    try{
+      Statement stmt = this.conn.createStatement();
+      String sql = "SELECT * FROM positions WHERE user_id = " + user_id;
+      ResultSet rs = stmt.executeQuery(sql);
+      if(rs.next()){
+        return true;
+      }
+      else{
+        return false;
+      }
+    }catch(Exception e){
+      e.printStackTrace();
+      return false;
+    }
+
+  }
+
+  //位置情報データを登録
+  public boolean insertPositions(int user_id, double latitude, double longitude, Timestamp date){//データベースのidはどうする？
+    try{
+      Statement stmt = this.conn.createStatement();
+      String sql = "INSERT INTO positions (user_id, latitude, longitude, date) values (\'" + user_id + "\',\'" + latitude + "\',\'" + longitude + "\',\'" + date + "\')";
+      int num = stmt.executeUpdate(sql);
+      return true;
+    }catch(Exception e){
+      e.printStackTrace();
+      return false;
+    }
+
+  }
+
+  //位置情報データを更新
+  public boolean updatePositions(int user_id, double latitude, double longitude, Timestamp date){
+    try{
+      Statement stmt = this.conn.createStatement();
+      String sql = "UPDATE positions SET latitude = " + latitude + ", longitude = " + longitude + ", date = \'" + date + "\' WHERE user_id = " + user_id;
+      int num = stmt.executeUpdate(sql);
+      return true;
+    }catch(Exception e){
+      e.printStackTrace();
+      return false;
+    }
+  }
+
+  public boolean closeDB(){
+    try{
+      if(conn != null){
+        conn.close();
+        // System.out.println("データベース切断に成功しました");
+        return true;
+      }
+      else{
+        //System.out.println("コネクションがありません");
+        return false;
+      }
+    }
+    catch (SQLException e){
+      e.printStackTrace();
+      return false;
+    }
+  }
+
+}

DatabaseTest2.java

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+import java.sql.Timestamp;
+import java.text.*;
+
+class DatabaseTest2{
+  //このmain関数を参考にサーバへ組み込む
+  public static void main(String args[]){
+    DatabaseRegister dr = new DatabaseRegister();
+    //データベースに接続
+    if(!dr.connectDB()){
+      System.out.println("データベース接続に失敗");
+    }
+    else{
+      //入力データは,区切りのStringと仮定
+      String dummy = "12,35.689521,139.691704,2015/09/21 17:09:00";
+      String[] positions = dummy.split(",", 0);
+      int user_id = Integer.parseInt(positions[0]);
+      double lat = Double.parseDouble(positions[1]);
+      double lon = Double.parseDouble(positions[2]);
+      Timestamp date = null;
+      try{
+        Long dateTimeLong = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss").parse(positions[3]).getTime();
+        date = new Timestamp(dateTimeLong);
+      }catch(Exception e){
+        e.printStackTrace();
+      }
+
+      System.out.println(user_id + " " + lat + " " + lon + " " + date);
+
+      if(dr.exists(user_id)){
+        dr.updatePositions(user_id, lat, lon, date);
+      }
+      else{
+        dr.insertPositions(user_id, lat, lon, date);
+      }
+      //データベースを閉じる
+      dr.closeDB();
+    }
+  }
+}

MIClient/.gitignore

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+.gradle
+/local.properties
+/.idea/workspace.xml
+/.idea/libraries
+.DS_Store
+/build
+/captures

MIClient/MIClient.iml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module external.linked.project.id="MIClient" external.linked.project.path="$MODULE_DIR$" external.root.project.path="$MODULE_DIR$" external.system.id="GRADLE" external.system.module.group="" external.system.module.version="unspecified" type="JAVA_MODULE" version="4">
+  <component name="FacetManager">
+    <facet type="java-gradle" name="Java-Gradle">
+      <configuration>
+        <option name="BUILD_FOLDER_PATH" value="$MODULE_DIR$/build" />
+        <option name="BUILDABLE" value="false" />
+      </configuration>
+    </facet>
+  </component>
+  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_6" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <excludeFolder url="file://$MODULE_DIR$/.gradle" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

MIClient/app/.gitignore

@@ -0,0 +1 @@
+/build