package org.jeecg.codegenerate;
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import java.io.FileWriter;
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import java.io.IOException;
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import java.sql.*;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* @Author: Lius
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* @CreateTime: 2025-06-23
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* @Description: SQL Server 触发器生成工具
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*/
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public class CreateTrigger {
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// 数据库连接信息
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private static final String JDBC_URL = "jdbc:sqlserver://192.168.1.118:1433;databaseName=LXZN_TEST_HANGYU_GK";
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private static final String USERNAME = "sa";
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private static final String PASSWORD = "123";
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public static void main(String[] args) {
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String schemaName = "dbo"; // SQL Server 默认架构
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String logTableName = "log_table"; // 日志表名
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try (Connection connection = DriverManager.getConnection(JDBC_URL, USERNAME, PASSWORD)) {
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// 获取指定架构下的所有表
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List<String> tables = getTables(connection, schemaName);
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// 生成触发器 SQL 并保存到文件
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generateTriggersForTables(connection, schemaName, logTableName, tables);
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} catch (SQLException | IOException e) {
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e.printStackTrace();
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}
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}
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/**
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* 获取指定架构下的所有表
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*/
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private static List<String> getTables(Connection connection, String schemaName) throws SQLException {
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List<String> tables = new ArrayList<>();
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DatabaseMetaData metaData = connection.getMetaData();
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try (ResultSet resultSet = metaData.getTables(null, schemaName, null, new String[]{"TABLE"})) {
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while (resultSet.next()) {
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String tableName = resultSet.getString("TABLE_NAME");
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tables.add(tableName);
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}
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}
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return tables;
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}
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/**
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* 获取表的字段列表
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*/
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private static List<String> getTableColumns(Connection connection, String schemaName, String tableName) throws SQLException {
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List<String> columns = new ArrayList<>();
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DatabaseMetaData metaData = connection.getMetaData();
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try (ResultSet resultSet = metaData.getColumns(null, schemaName, tableName, null)) {
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while (resultSet.next()) {
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String columnName = resultSet.getString("COLUMN_NAME");
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columns.add(columnName);
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}
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}
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return columns;
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}
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/**
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* 获取表的主键列
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*/
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private static String getPrimaryKeyColumn(Connection connection, String schemaName, String tableName) throws SQLException {
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DatabaseMetaData metaData = connection.getMetaData();
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try (ResultSet resultSet = metaData.getPrimaryKeys(null, schemaName, tableName)) {
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if (resultSet.next()) {
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return resultSet.getString("COLUMN_NAME");
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}
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}
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return "id"; // 默认使用id作为主键，如果没有找到主键
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}
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/**
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* 为所有表生成触发器
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*/
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private static void generateTriggersForTables(Connection connection, String schemaName, String logTableName, List<String> tables) throws SQLException, IOException {
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try (FileWriter writer = new FileWriter("triggers.sql")) {
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for (String tableName : tables) {
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// 获取表结构信息
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List<String> columns = getTableColumns(connection, schemaName, tableName);
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String primaryKey = getPrimaryKeyColumn(connection, schemaName, tableName);
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// 生成触发器 SQL
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String triggerSQL = generateTriggerSQL(schemaName, tableName, logTableName, columns, primaryKey);
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// 将生成的触发器 SQL 写入文件
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writer.write("-- 触发器表: " + tableName + "\n");
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writer.write(triggerSQL);
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writer.write("\n\n");
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// 如果需要，可以直接在数据库中创建触发器
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// createTrigger(connection, triggerSQL);
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}
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System.out.println("成功生成触发器并保存到Triggers.sql中!");
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}
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}
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/**
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* 生成 SQL Server 触发器 SQL
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*/
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private static String generateTriggerSQL(String schemaName, String tableName, String logTableName, List<String> columns, String primaryKey) {
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StringBuilder triggerSQL = new StringBuilder();
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// 触发器头部
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triggerSQL.append("CREATE TRIGGER [")
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.append(tableName)
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.append("_trigger]\n")
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.append("ON [")
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.append(schemaName)
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.append("].[").append(tableName).append("]\n")
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.append("AFTER INSERT, UPDATE, DELETE\n")
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.append("AS\n")
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.append("BEGIN\n")
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.append(" SET NOCOUNT ON;\n\n");
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// 插入操作
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triggerSQL.append(" -- 插入操作\n")
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.append(" IF EXISTS (SELECT * FROM inserted) AND NOT EXISTS (SELECT * FROM deleted)\n")
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.append(" BEGIN\n")
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.append(" INSERT INTO [").append(logTableName).append("] (action, create_time, sql_log)\n")
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.append(" SELECT 'INSERT', GETDATE(), 'INSERT INTO [").append(tableName).append("] (");
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// 拼接字段名
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for (int i = 0; i < columns.size(); i++) {
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triggerSQL.append("[").append(columns.get(i)).append("]");
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if (i < columns.size() - 1) {
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triggerSQL.append(", ");
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}
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}
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triggerSQL.append(") VALUES (''' + ");
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// 拼接字段值
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for (int i = 0; i < columns.size(); i++) {
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triggerSQL.append("ISNULL(CAST(i.").append(columns.get(i)).append(" AS NVARCHAR(MAX)), '') + '''");
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if (i < columns.size() - 1) {
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triggerSQL.append(", ''' + ");
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}
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}
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triggerSQL.append(");'\n")
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.append(" FROM inserted i;\n")
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.append(" END\n\n");
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// 更新操作
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triggerSQL.append(" -- 更新操作\n")
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.append(" IF EXISTS (SELECT * FROM inserted) AND EXISTS (SELECT * FROM deleted)\n")
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.append(" BEGIN\n")
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.append(" INSERT INTO [").append(logTableName).append("] (action, create_time, sql_log)\n")
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.append(" SELECT 'UPDATE', GETDATE(), 'UPDATE [").append(tableName).append("] SET ");
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// 拼接更新字段
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for (int i = 0; i < columns.size(); i++) {
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triggerSQL.append("[").append(columns.get(i)).append("] = ''' + ISNULL(CAST(i.").append(columns.get(i)).append(" AS NVARCHAR(MAX)), '') + '''");
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if (i < columns.size() - 1) {
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triggerSQL.append(", ");
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}
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}
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triggerSQL.append(" WHERE [").append(primaryKey).append("] = ''' + ISNULL(CAST(d.").append(primaryKey).append(" AS NVARCHAR(MAX)), '') + ''';'\n")
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.append(" FROM inserted i\n")
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.append(" INNER JOIN deleted d ON i.").append(primaryKey).append(" = d.").append(primaryKey).append(";\n")
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.append(" END\n\n");
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// 删除操作
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triggerSQL.append(" -- 删除操作\n")
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.append(" IF NOT EXISTS (SELECT * FROM inserted) AND EXISTS (SELECT * FROM deleted)\n")
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.append(" BEGIN\n")
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.append(" INSERT INTO [").append(logTableName).append("] (action, create_time, sql_log)\n")
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.append(" SELECT 'DELETE', GETDATE(), 'DELETE FROM [").append(tableName).append("] WHERE [").append(primaryKey).append("] = ''' + ISNULL(CAST(d.").append(primaryKey).append(" AS NVARCHAR(MAX)), '') + ''';'\n")
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.append(" FROM deleted d;\n")
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.append(" END\n\n");
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triggerSQL.append("END;\n");
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return triggerSQL.toString();
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}
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// /**
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// * 在数据库中创建触发器
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// */
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// private static void createTrigger(Connection connection, String triggerSQL) throws SQLException {
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// try (Statement statement = connection.createStatement()) {
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// statement.execute(triggerSQL);
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// System.out.println("Trigger created successfully!");
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// }
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// }
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}
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