mysql数据库表结构文档自动生成工具

1.首先创建项目结构

2.web.xml配置

<?xml version="1.0" encoding="UTF-8"?>

<web-app
   xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xmlns="http://java.sun.com/xml/ns/javaee" version="3.0">
   <error-page>
       <error-code>404</error-code>
       <location>/NewFile.jsp</location>
   </error-page>
   <context-param>

<param-name>contextConfigLocation</param-name>

<param-value>classpath:spring-mybatis.xml</param-value>

</context-param>
<listener>

<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

</listener>
<servlet>

<servlet-name>dispatcherServlet</servlet-name>

<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

<init-param>

<param-name>contextConfigLocation</param-name>

<param-value>classpath:spring-mvc.xml</param-value>

</init-param>

<load-on-startup>1</load-on-startup>

</servlet>
<servlet-mapping>

<servlet-name>dispatcherServlet</servlet-name>

<url-pattern>/</url-pattern>

</servlet-mapping>
<filter>

<filter-name>characterEncodingFilter</filter-name>

<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>

<init-param>

<param-name>encoding</param-name>

<param-value>UTF-8</param-value>

</init-param>

</filter>
<filter-mapping>

<filter-name>characterEncodingFilter</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>
   
   <filter>
<filter-name>CORS</filter-name>
<filter-class>com.thetransactioncompany.cors.CORSFilter</filter-class>
<init-param>
<param-name>cors.allowOrigin</param-name> 
<param-value>*</param-value>
</init-param>
<init-param>
<param-name>cors.supportedMethods</param-name>
<param-value> GET, POST, HEAD, PUT, DELETE </param-value>
</init-param>
<init-param>
<param-name>cors.supportedHeaders</param-name>
<param-value> Accept, Origin, X-Requested-With, Content-Type, Last-Modified </param-value>
</init-param>
<init-param>
<param-name>cors.exposedHeaders</param-name>
<param-value>Set-Cookie</param-value>
</init-param>
<init-param>
<param-name>cors.supportsCredentials</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CORS</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>

3.jar包引入:pom.xml配置

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com</groupId>
<artifactId>dbcps</artifactId>
<version>0.0.1-SNAPSHOT</version>
<dependencies>
   
   <dependency>
   <groupId>com.lowagie</groupId>
   <artifactId>itext</artifactId>
   <version>2.1.7</version>
   </dependency>
   <dependency>
       <groupId>com.lowagie</groupId>
       <artifactId>itext-rtf</artifactId>
       <version>2.1.7</version>
   </dependency>
   
       
       <dependency>
       <groupId>mysql</groupId>
       <artifactId>mysql-connector-java</artifactId>
           <version>5.1.24</version>
       </dependency>
       
       <dependency>
       <groupId>commons-dbcp</groupId>
       <artifactId>commons-dbcp</artifactId>
       <version>1.4</version>
       </dependency>
       
       
       <dependency>
       <groupId>org.mybatis</groupId>
       <artifactId>mybatis</artifactId>
       <version>3.2.8</version>
       </dependency>
       
       <dependency>
       <groupId>org.mybatis</groupId>
       <artifactId>mybatis-spring</artifactId>
       <version>1.3.1</version>
       </dependency>
</dependencies>
<build>
   <plugins>
       <plugin>

<groupId>org.apache.maven.plugins</groupId>

<artifactId>maven-compiler-plugin</artifactId>

</configuration>

</plugin>
<plugin>

<groupId>org.apache.tomcat.maven</groupId>

<artifactId>tomcat7-maven-plugin</artifactId>

</configuration>

</plugin>
</plugins>
</build>
</project>

4.java代码实现

package dbdoc;

import java.awt.Color;
import java.io.FileOutputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import com.lowagie.text.Cell;
import com.lowagie.text.Document;
import com.lowagie.text.PageSize;
import com.lowagie.text.Paragraph;
import com.lowagie.text.Table;
import com.lowagie.text.rtf.RtfWriter2;
/**
* 数据字典生成器 Mysql
* @author Eric zhou
*
*/
public class MYSQL_DBDocer {
//键类型字典
private static Map<String,String> keyType = new HashMap<String,String>();
//初始化jdbc
static{
try {
keyType.put("PRI", "主键");
keyType.put("UNI", "唯一键");
Class.forName("com.mysql.jdbc.Driver");
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
private static String url = "jdbc:mysql://localhost:3306/库名";//链接url
private static String username = "###"; //用户名
private static String password = "###"; //密码
private static String schema = "###"; //目标数据库名
//查询所有表的sql语句
private static String sql_get_all_tables = "select table_name,TABLE_COMMENT from INFORMATION_SCHEMA.tables where TABLE_SCHEMA='"+schema+"' and TABLE_TYPE='BASE TABLE'";
//查询所有字段的sql语句
private static String sql_get_all_columns = "select column_name,data_type,character_octet_length,COLUMN_COMMENT,is_nullable,COLUMN_key from information_schema.`COLUMNS` where TABLE_NAME='{table_name}' and TABLE_SCHEMA='"+schema+"'";
public static void main(String[] args) throws Exception {
//初始化word文档
Document document = new Document(PageSize.A4);
RtfWriter2.getInstance(document,new FileOutputStream("E:/word.doc"));
document.open();
//查询开始
Connection conn = getConnection();
//获取所有表
List tables = getDataBySQL(sql_get_all_tables,conn);
int i=1;
for (Iterator iterator = tables.iterator(); iterator.hasNext();) {
String [] arr = (String []) iterator.next();
//循环获取字段信息
System.out.print(i+".正在处理数据表-----------"+arr[0]);
addTableMetaData(document,arr,i);
List columns = getDataBySQL(sql_get_all_columns.replace("{table_name}", arr[0]),conn);
addTableDetail(document,columns);
addBlank(document);
System.out.println("...done");
i++;
}
document.close();
conn.close();
}
/**
* 添加一个空行
* @param document
* @throws Exception
*/
public static void addBlank(Document document)throws Exception{
Paragraph ph = new Paragraph("");
ph.setAlignment(Paragraph.ALIGN_LEFT);
document.add(ph);
}
/**
* 添加包含字段详细信息的表格
* @param document
* @param arr1
* @param columns
* @throws Exception
*/
public static void addTableDetail(Document document,List columns)throws Exception{
Table table = new Table(6);
table.setWidth(100f);//表格宽度100%
table.setBorderWidth(1);
table.setBorderColor(Color.BLACK);
table.setPadding(0);
table.setSpacing(0);
Cell cell1 = new Cell("序号");// 单元格
cell1.setHeader(true);

Cell cell2 = new Cell("列名");// 单元格
cell2.setHeader(true);

Cell cell3 = new Cell("类型");// 单元格
cell3.setHeader(true);

Cell cell4 = new Cell("长度");// 单元格
cell4.setHeader(true);

Cell cell5 = new Cell("键");// 单元格
cell5.setHeader(true);

Cell cell6 = new Cell("说明");// 单元格
cell6.setHeader(true);
//设置表头格式
table.setWidths(new float[]{8f,30f,15f,8f,10f,29f});
cell1.setHorizontalAlignment(Cell.ALIGN_CENTER);
cell1.setBackgroundColor(Color.gray);
cell2.setHorizontalAlignment(Cell.ALIGN_CENTER);
cell2.setBackgroundColor(Color.gray);
cell3.setHorizontalAlignment(Cell.ALIGN_CENTER);
cell3.setBackgroundColor(Color.gray);
cell4.setHorizontalAlignment(Cell.ALIGN_CENTER);
cell4.setBackgroundColor(Color.gray);
cell5.setHorizontalAlignment(Cell.ALIGN_CENTER);
cell5.setBackgroundColor(Color.gray);
cell6.setHorizontalAlignment(Cell.ALIGN_CENTER);
cell6.setBackgroundColor(Color.gray);
table.addCell(cell1);
table.addCell(cell2);
table.addCell(cell3);
table.addCell(cell4);
table.addCell(cell5);
table.addCell(cell6);
table.endHeaders();// 表头结束
int x = 1;
for (Iterator iterator = columns.iterator(); iterator.hasNext();) {
String [] arr2 = (String []) iterator.next();
Cell c1 = new Cell(x+"");
Cell c2 = new Cell(arr2[0]);
Cell c3 = new Cell(arr2[1]);
Cell c4 = new Cell(arr2[2]);

String key = keyType.get(arr2[5]);
if(key==null)key = "";
Cell c5 = new Cell(key);
Cell c6 = new Cell(arr2[3]);
c1.setHorizontalAlignment(Cell.ALIGN_CENTER);
c2.setHorizontalAlignment(Cell.ALIGN_CENTER);
c3.setHorizontalAlignment(Cell.ALIGN_CENTER);
c4.setHorizontalAlignment(Cell.ALIGN_CENTER);
c5.setHorizontalAlignment(Cell.ALIGN_CENTER);
c6.setHorizontalAlignment(Cell.ALIGN_CENTER);
table.addCell(c1);
table.addCell(c2);
table.addCell(c3);
table.addCell(c4);
table.addCell(c5);
table.addCell(c6);
x++;
}
document.add(table);
}
/**
* 增加表概要信息
* @param dcument
* @param arr
* @param i
* @throws Exception
*/
public static void addTableMetaData(Document dcument,String [] arr,int i) throws Exception{
Paragraph ph = new Paragraph(i+". 表名: "+arr[0]+" 说明: "+(arr[1]==null?"":arr[1]));
ph.setAlignment(Paragraph.ALIGN_LEFT);
dcument.add(ph);
}
/**
* 把SQL语句查询出列表
* @param sql
* @param conn
* @return
*/
public static List getDataBySQL(String sql,Connection conn){
Statement stmt = null;
ResultSet rs = null;
List list = new ArrayList();
try {
stmt = conn.createStatement();
rs = stmt.executeQuery(sql);
while(rs.next()){
String [] arr = new String[rs.getMetaData().getColumnCount()];
for(int i=0;i<arr.length;i++){
arr[i] = rs.getString(i+1);
}
list.add(arr);
}
} catch (SQLException e) {
e.printStackTrace();
}finally{
try {
if(rs!=null)rs.close();
if(stmt!=null)stmt.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
return list;
}
/**
* 获取数据库连接
* @return
*/
public static Connection getConnection(){
try {
return DriverManager.getConnection(url, username, password);
} catch (SQLException e) {
e.printStackTrace();
}
return null;
}
}
源码链接:资源链接

原文链接：https://blog.csdn.net/weixin_41913929/article/details/90081088