{"id":664,"date":"2022-09-27T10:45:06","date_gmt":"2022-09-27T02:45:06","guid":{"rendered":"https:\/\/22pig.com\/?p=664"},"modified":"2022-09-27T10:45:06","modified_gmt":"2022-09-27T02:45:06","slug":"java%e8%af%bb%e5%8f%96mysql%e8%a1%a8%e7%9a%84%e6%b3%a8%e9%87%8a%e5%8f%8a%e5%ad%97%e6%ae%b5%e6%b3%a8%e9%87%8a","status":"publish","type":"post","link":"http:\/\/22pig.com\/?p=664","title":{"rendered":"java\u8bfb\u53d6mysql\u8868\u7684\u6ce8\u91ca\u53ca\u5b57\u6bb5\u6ce8\u91ca"},"content":{"rendered":"

java\u8bfb\u53d6mysql\u8868\u7684\u6ce8\u91ca\u53ca\u5b57\u6bb5\u6ce8\u91ca<\/span><\/h1>\n

 <\/p>\n

\/**
\n* \u8bfb\u53d6mysql\u67d0\u6570\u636e\u5e93\u4e0b\u8868\u7684\u6ce8\u91ca\u4fe1\u606f
\n*
\n* @author xxx
\n*\/
\npublic class MySQLTableComment {
\npublic static Connection getMySQLConnection() throws Exception {
\nClass.forName(“com.mysql.jdbc.Driver”);
\nConnection conn = DriverManager.getConnection(“jdbc:mysql:\/\/localhost:3306\/databaseName”, “root”, “root”);
\nreturn conn;
\n}<\/p>\n

\/**
\n* \u83b7\u53d6\u5f53\u524d\u6570\u636e\u5e93\u4e0b\u7684\u6240\u6709\u8868\u540d\u79f0
\n* @return
\n* @throws Exception
\n*\/
\npublic static List getAllTableName() throws Exception {
\nList tables = new ArrayList();
\nConnection conn = getMySQLConnection();
\nStatement stmt = conn.createStatement();
\nResultSet rs = stmt.executeQuery(“SHOW TABLES “);
\nwhile (rs.next()) {
\nString tableName = rs.getString(1);
\ntables.add(tableName);
\n}
\nrs.close();
\nstmt.close();
\nconn.close();
\nreturn tables;
\n}<\/p>\n

\/**
\n* \u83b7\u5f97\u67d0\u8868\u7684\u5efa\u8868\u8bed\u53e5
\n* @param tableName
\n* @return
\n* @throws Exception
\n*\/
\npublic static Map getCommentByTableName(List tableName) throws Exception {
\nMap map = new HashMap();
\nConnection conn = getMySQLConnection();
\nStatement stmt = conn.createStatement();
\nfor (int i = 0; i < tableName.size(); i++) {
\nString table = (String) tableName.get(i);
\nResultSet rs = stmt.executeQuery(“SHOW CREATE TABLE ” + table);
\nif (rs != null && rs.next()) {
\nString createDDL = rs.getString(2);
\nString comment = parse(createDDL);
\nmap.put(table, comment);
\n}
\nrs.close();
\n}
\nstmt.close();
\nconn.close();
\nreturn map;
\n}
\n\/**
\n* \u83b7\u5f97\u67d0\u8868\u4e2d\u6240\u6709\u5b57\u6bb5\u7684\u6ce8\u91ca
\n* @param tableName
\n* @return
\n* @throws Exception
\n*\/
\npublic static void getColumnCommentByTableName(List tableName) throws Exception {
\nMap map = new HashMap();
\nConnection conn = getMySQLConnection();
\nStatement stmt = conn.createStatement();
\nfor (int i = 0; i < tableName.size(); i++) {
\nString table = (String) tableName.get(i);
\nResultSet rs = stmt.executeQuery(“show full columns from ” + table);
\nSystem.out.println(“\u3010”+table+”\u3011”);
\n\/\/ if (rs != null && rs.next()) {
\n\/\/map.put(rs.getString(“Field”), rs.getString(“Comment”));
\nwhile (rs.next()) {
\n\/\/ System.out.println(“\u5b57\u6bb5\u540d\u79f0\uff1a” + rs.getString(“Field”) + “\\t”+ “\u5b57\u6bb5\u6ce8\u91ca\uff1a” + rs.getString(“Comment”) );
\nSystem.out.println(rs.getString(“Field”) + “\\t:\\t”+ rs.getString(“Comment”) );
\n}
\n\/\/ }
\nrs.close();
\n}
\nstmt.close();
\nconn.close();
\n\/\/ return map;
\n}<\/p>\n

 <\/p>\n

\/**
\n* \u8fd4\u56de\u6ce8\u91ca\u4fe1\u606f
\n* @param all
\n* @return
\n*\/<\/p>\n

public static String parse(String all) {
\nString comment = null;
\nint index = all.indexOf(“COMMENT='”);
\nif (index < 0) {
\nreturn “”;
\n}
\ncomment = all.substring(index + 9);
\ncomment = comment.substring(0, comment.length() – 1);
\nreturn comment;
\n}<\/p>\n

public static void main(String[] args) throws Exception {
\nList tables = getAllTableName();
\nMap tablesComment = getCommentByTableName(tables);
\nSet names = tablesComment.keySet();
\nIterator iter = names.iterator();
\nwhile (iter.hasNext()) {
\nString name = (String) iter.next();
\nSystem.out.println(“Table Name: ” + name + “, Comment: ” + tablesComment.get(name));
\n}<\/p>\n

getColumnCommentByTableName(tables);
\n}<\/p>\n","protected":false},"excerpt":{"rendered":"

java\u8bfb\u53d6mysql\u8868\u7684\u6ce8\u91ca\u53ca\u5b57\u6bb5\u6ce8\u91ca   \/** * \u8bfb\u53d6mysql\u67d0\u6570\u636e\u5e93\u4e0b\u8868\u7684\u6ce8\u91ca\u4fe1\u606f * * @author xxx *\/ public class MySQLTableComment { public static Connection getMySQLConnection() throws Exception { Class.forName(“com.mysql.jdbc.Driver”); Connection conn = DriverManager.getConnection(“jdbc:mysql:\/\/localhost:3306\/databaseName”, “root”, “root”); return conn; } \/** * \u83b7\u53d6\u5f53\u524d\u6570\u636e\u5e93\u4e0b\u7684\u6240\u6709\u8868\u540d\u79f0 * @return * @throws Exception *\/ public static List getAllTableName() throws Exception { List tables = new ArrayList(); Connection conn = … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-664","post","type-post","status-publish","format-standard","hentry","category-java"],"_links":{"self":[{"href":"http:\/\/22pig.com\/index.php?rest_route=\/wp\/v2\/posts\/664","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/22pig.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/22pig.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/22pig.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/22pig.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=664"}],"version-history":[{"count":0,"href":"http:\/\/22pig.com\/index.php?rest_route=\/wp\/v2\/posts\/664\/revisions"}],"wp:attachment":[{"href":"http:\/\/22pig.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=664"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/22pig.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=664"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/22pig.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=664"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}