我搜索了如何解决此问题，但没有找到解决方法。
我正在尝试使用Android Java在mysql中执行存储的过程。我只用Java尝试了一下，效果很好，但是在Android上却遇到了这个错误：
08-06 15:21:56.485 4057-4092/com.example.ik.myapplication E/+====/>: S1C00
08-06 15:21:56.485 4057-4092/com.example.ik.myapplication E/+====/>: Callable statments not supported.
08-06 15:21:56.485 4057-4092/com.example.ik.myapplication W/System.err:java.sql.SQLException: Callable statments not supported.
08-06 15:21:56.485 4057-4092/com.example.ik.myapplication W/System.err:at com.mysql.jdbc.Connection.prepareCall(Connection.java:1284)
08-06 15:21:56.485 4057-4092/com.example.ik.myapplication W/System.err:at com.example.ik.myapplication.MainActivity$1$1.run(MainActivity.java:61)
08-06 15:21:56.485 4057-4092/com.example.ik.myapplication W/System.err:at java.lang.Thread.run(Thread.java:761)
这是我的代码
MainActivity.java：
package com.example.ik.myapplication;
import android.annotation.SuppressLint;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.*;
import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.sql.*;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity {
AdminPage test = new AdminPage();
public String md5(String text) throws NoSuchAlgorithmException {
MessageDigest messageDigest = MessageDigest.getInstance("MD5");
messageDigest.reset();
messageDigest.update(text.getBytes());
byte[] digest = messageDigest.digest();
BigInteger bigInt = new BigInteger(1, digest);
String hashtext = bigInt.toString(16);
while (hashtext.length() < 32) {
hashtext = "0" + hashtext;
}
return (hashtext);
}
@SuppressLint("Assert")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final EditText input_username = (EditText) findViewById(R.id.input_username);
final EditText input_password = (EditText) findViewById(R.id.input_password);
final Button login = (Button) findViewById(R.id.login_button);
login.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (input_username.getText().toString().equals("admin")) {
new Thread(new Runnable() {
@Override
public void run() {
try {
Class.forName("com.mysql.jdbc.Driver");
final dbconnect dbconnect = null;
final Statement statement = dbconnect.dbconnection().createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY);
Log.e("+===>","before CallableStatement");
String query = "call loginadmin(?,?,?)";
CallableStatement cs=dbconnect.dbconnection().prepareCall(query);
cs.setString(1,input_username.getText().toString());
cs.setString(2,input_password.getText().toString());
cs.registerOutParameter(3,Types.INTEGER);
Log.e("+===>","after CallableStatement");
cs.execute();
final int logging =cs.getInt(3);
Log.e("+====/>", String.valueOf(logging));
runOnUiThread(new Runnable() {
@Override
public void run() {
if(logging==1){
Intent intent = new Intent(getApplicationContext(), AdminPage.class);
Toast.makeText(MainActivity.this, "WELCOME TO ADMIN PAGE", Toast.LENGTH_LONG).show();
intent.putExtra("admin_username",input_username.getText().toString());
startActivity(intent);
finish();
} else {
Toast.makeText(MainActivity.this, "Check Your Informations , Please", Toast.LENGTH_LONG).show();
}
}
});
} catch (SQLException e) {
Log.e("+====/>",e.getSQLState());
Log.e("+====/>",e.getMessage());
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
}).start();
} else {
new Thread(new Runnable() {
@Override
public void run() {
try {
Class.forName("com.mysql.jdbc.Driver");
final dbconnect dbconnect = null;
final Statement statement = dbconnect.dbconnection().createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY);
String sqlquery = "SELECT * FROM `accounts`";
final ResultSet resultSet = statement.executeQuery(sqlquery);
Account accounts;
String uuid;
final ArrayList<Account> users = new ArrayList<Account>();
while (resultSet.next()) {
accounts = new Account(resultSet.getString(1), resultSet.getString(3), resultSet.getString(4), resultSet.getString(5), resultSet.getString(6), resultSet.getString(7));
users.add(accounts);
}
runOnUiThread(new Runnable() {
@Override
public void run() {
int i = 0;
while (i < users.size()) {
try {
if (users.get(i).getUsername().equals(input_username.getText().toString()) && users.get(i).getPassword().equals(md5(input_password.getText().toString()))) {
Intent intent = new Intent(getApplicationContext(), UsersPage.class);
Toast.makeText(MainActivity.this, "Welcome to your page " + input_username.getText().toString(), Toast.LENGTH_LONG).show();
try {
dbconnect.dbconnection().close();
statement.close();
resultSet.close();
} catch (SQLException e) {
e.printStackTrace();
}
intent.putExtra("uuid", users.get(i).getUuid());
intent.putExtra("username", users.get(i).getUsername());
intent.putExtra("salary", users.get(i).getSalary());
intent.putExtra("statue", users.get(i).getStatue());
startActivity(intent);
finish();
break;
}
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
i++;
}
if (i == users.size()) {
Toast.makeText(MainActivity.this, "Check your informations please", Toast.LENGTH_SHORT).show();
}
}
});
} catch (SQLException | ClassNotFoundException e) {
e.printStackTrace();
}
}
}).start();
}
}
});
Button forgotten = (Button) findViewById(R.id.forgot);
forgotten.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent forgotten = new Intent(getApplicationContext(), ForgottenPassword.class);
startActivity(forgotten);
finish();
}
});
}
}
这是我的dbconnect类：
package com.example.ik.myapplication;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class dbconnect {
private static String username;
private static String password;
private static String mysql;
public static Connection dbconnection() throws SQLException {
mysql="jdbc:mysql://10.0.2.2:3306/enterprise";
username="root";
password="borni2019";
return DriverManager.getConnection(mysql,username,password);
}
}
这是我的存储过程：
create procedure loginadmin(IN username varchar(50), IN password varchar(50), OUT confirmed int)
begin
if exists(select * from admin_account where enterprise.admin_account.Username = username AND enterprise.admin_account.Password=password) then
set confirmed=1;
else
set confirmed=0;
end if;
end;
谢谢
答案 0 :(得分：0)
通过此链接：
https://coderanch.com/t/305887/databases/SQLException-Callable-statments-supported
似乎您在Android上使用的MySQL驱动程序版本较旧。你可以尝试一个新的吗？