generator自动生成代码人人网快速开发（带参的发送request请求到后台，参数的接收）
前台：
html块:<a class="btn btn-primary" @click="generator"><i class="fa fa-file-code-o"></i> 生成代码</a>
js块：generator: function() {
var tableNames = getSelectedRows();
if(tableNames == null){
return ;
}
location.href = "sys/generator/code?tables=" + JSON.stringify(tableNames);
}
后台:
controller层
@Controller
@RequestMapping("/sys/generator")
public class SysGeneratorController {
@Autowired
private SysGeneratorService sysGeneratorService;
/**
* 生成代码
*/
@RequestMapping("/code")
public void code(HttpServletRequest request, HttpServletResponse response) throws IOException{
String[] tableNames = new String[]{};
String tables = request.getParameter("tables");
tableNames = JSON.parseArray(tables).toArray(tableNames);
byte[] data = sysGeneratorService.generatorCode(tableNames);
response.reset();
response.setHeader("Content-Disposition", "attachment; filename=\"renren.zip\"");
response.addHeader("Content-Length", "" + data.length);
response.setContentType("application/octet-stream; charset=UTF-8");
IOUtils.write(data, response.getOutputStream()); //IOUtils需要引入一个org.apache.commons.io.IOUtils;引入
}
配置文件：generator.properties
#\u4EE3\u7801\u751F\u6210\u5668\uFF0C\u914D\u7F6E\u4FE1\u606F
mainPath=io.renren
#\u5305\u540D
package=io.renren.modules
moduleName=generator
#\u4F5C\u8005
author=chenshun
#Email
email=sunlightcs@gmail.com
#\u8868\u524D\u7F00(\u7C7B\u540D\u4E0D\u4F1A\u5305\u542B\u8868\u524D\u7F00)
tablePrefix=tb_
#\u7C7B\u578B\u8F6C\u6362\uFF0C\u914D\u7F6E\u4FE1\u606F
tinyint=Integer
smallint=Integer
mediumint=Integer
int=Integer
integer=Integer
bigint=Long
float=Float
double=Double
decimal=BigDecimal
bit=Boolean
char=String
varchar=String
tinytext=String
text=String
mediumtext=String
longtext=String
date=Date
datetime=Date
timestamp=Date
package io.renren.utils;
import io.renren.entity.ColumnEntity;
import io.renren.entity.TableEntity;
import org.apache.commons.configuration.Configuration;
import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.configuration.PropertiesConfiguration;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang.WordUtils;
import org.apache.velocity.Template;
import org.apache.velocity.VelocityContext;
import org.apache.velocity.app.Velocity;
import java.io.File;
import java.io.IOException;
import java.io.StringWriter;
import java.util.*;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
/**
* 代码生成器 工具类
*
* @author chenshun
* @email sunlightcs@gmail.com
* @date 2016年12月19日 下午11:40:24
*/
public class GenUtils {
public static List<String> getTemplates(){
List<String> templates = new ArrayList<String>();
templates.add("template/Entity.java.vm");
templates.add("template/Dao.java.vm");
templates.add("template/Dao.xml.vm");
templates.add("template/Service.java.vm");
templates.add("template/ServiceImpl.java.vm");
templates.add("template/Controller.java.vm");
templates.add("template/menu.sql.vm");
templates.add("template/adminlte/list.html.vm");
templates.add("template/adminlte/list.js.vm");
templates.add("template/elementui/index.vue.vm");
templates.add("template/elementui/add-or-update.vue.vm");
templates.add("template/elementui/index.js.vm");
return templates;
}
/**
* 生成代码
*/
public static void generatorCode(Map<String, String> table,
List<Map<String, String>> columns, ZipOutputStream zip) {
//配置信息
Configuration config = getConfig();
boolean hasBigDecimal = false;
//表信息
TableEntity tableEntity = new TableEntity();
tableEntity.setTableName(table.get("tableName" ));
tableEntity.setComments(table.get("tableComment" ));
//表名转换成Java类名
String className = tableToJava(tableEntity.getTableName(), config.getString("tablePrefix" ));
tableEntity.setClassName(className);
tableEntity.setClassname(StringUtils.uncapitalize(className));
//列信息
List<ColumnEntity> columsList = new ArrayList<>();
for(Map<String, String> column : columns){
ColumnEntity columnEntity = new ColumnEntity();
columnEntity.setColumnName(column.get("columnName" ));
columnEntity.setDataType(column.get("dataType" ));
columnEntity.setComments(column.get("columnComment" ));
columnEntity.setExtra(column.get("extra" ));
//列名转换成Java属性名
String attrName = columnToJava(columnEntity.getColumnName());
columnEntity.setAttrName(attrName);
columnEntity.setAttrname(StringUtils.uncapitalize(attrName));
//列的数据类型，转换成Java类型
String attrType = config.getString(columnEntity.getDataType(), "unknowType" );
columnEntity.setAttrType(attrType);
if (!hasBigDecimal && attrType.equals("BigDecimal" )) {
hasBigDecimal = true;
}
//是否主键
if ("PRI".equalsIgnoreCase(column.get("columnKey" )) && tableEntity.getPk() == null) {
tableEntity.setPk(columnEntity);
}
columsList.add(columnEntity);
}
tableEntity.setColumns(columsList);
//没主键，则第一个字段为主键
if (tableEntity.getPk() == null) {
tableEntity.setPk(tableEntity.getColumns().get(0));
}
//设置velocity资源加载器
Properties prop = new Properties();
prop.put("file.resource.loader.class", "org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader" );
Velocity.init(prop);
String mainPath = config.getString("mainPath" );
mainPath = StringUtils.isBlank(mainPath) ? "io.renren" : mainPath;
//封装模板数据
Map<String, Object> map = new HashMap<>();
map.put("tableName", tableEntity.getTableName());
map.put("comments", tableEntity.getComments());
map.put("pk", tableEntity.getPk());
map.put("className", tableEntity.getClassName());
map.put("classname", tableEntity.getClassname());
map.put("pathName", tableEntity.getClassname().toLowerCase());
map.put("columns", tableEntity.getColumns());
map.put("hasBigDecimal", hasBigDecimal);
map.put("mainPath", mainPath);
map.put("package", config.getString("package" ));
map.put("moduleName", config.getString("moduleName" ));
map.put("author", config.getString("author" ));
map.put("email", config.getString("email" ));
map.put("datetime", DateUtils.format(new Date(), DateUtils.DATE_TIME_PATTERN));
VelocityContext context = new VelocityContext(map);
//获取模板列表
List<String> templates = getTemplates();
for (String template : templates) {
//渲染模板
StringWriter sw = new StringWriter();
Template tpl = Velocity.getTemplate(template, "UTF-8" );
tpl.merge(context, sw);
try {
//添加到zip
zip.putNextEntry(new ZipEntry(getFileName(template, tableEntity.getClassName(), config.getString("package" ), config.getString("moduleName" ))));
IOUtils.write(sw.toString(), zip, "UTF-8" );
IOUtils.closeQuietly(sw);
zip.closeEntry();
} catch (IOException e) {
throw new RRException("渲染模板失败，表名：" + tableEntity.getTableName(), e);
}
}
}
/**
* 列名转换成Java属性名
*/
public static String columnToJava(String columnName) {
return WordUtils.capitalizeFully(columnName, new char[]{'_'}).replace("_", "" );
}
/**
* 表名转换成Java类名
*/
public static String tableToJava(String tableName, String tablePrefix) {
if (StringUtils.isNotBlank(tablePrefix)) {
tableName = tableName.replace(tablePrefix, "" );
}
return columnToJava(tableName);
}
/**
* 获取配置信息
*/
public static Configuration getConfig() {
try {
return new PropertiesConfiguration("generator.properties" );
} catch (ConfigurationException e) {
throw new RRException("获取配置文件失败，", e);
}
}
/**
* 获取文件名
*/
public static String getFileName(String template, String className, String packageName, String moduleName) {
String packagePath = "main" + File.separator + "java" + File.separator;
if (StringUtils.isNotBlank(packageName)) {
packagePath += packageName.replace(".", File.separator) + File.separator + moduleName + File.separator;
}
if (template.contains("Entity.java.vm" )) {
return packagePath + "entity" + File.separator + className + "Entity.java";
}
if (template.contains("Dao.java.vm" )) {
return packagePath + "dao" + File.separator + className + "Dao.java";
}
if (template.contains("Service.java.vm" )) {
return packagePath + "service" + File.separator + className + "Service.java";
}
if (template.contains("ServiceImpl.java.vm" )) {
return packagePath + "service" + File.separator + "impl" + File.separator + className + "ServiceImpl.java";
}
if (template.contains("Controller.java.vm" )) {
return packagePath + "controller" + File.separator + className + "Controller.java";
}
if (template.contains("Dao.xml.vm" )) {
return "main" + File.separator + "resources" + File.separator + "mapper" + File.separator + moduleName + File.separator + className + "Dao.xml";
}
if (template.contains("menu.sql.vm" )) {
return className.toLowerCase() + "_menu.sql";
}
if (template.contains("list.html.vm" )) {
return "main" + File.separator + "resources" + File.separator + "adminlte" + File.separator
+ "modules" + File.separator + moduleName + File.separator + className.toLowerCase() + ".html";
}
if (template.contains("list.js.vm" )) {
return "main" + File.separator + "resources" + File.separator + "adminlte" + File.separator + "js" + File.separator
+ "modules" + File.separator + moduleName + File.separator + className.toLowerCase() + ".js";
}
if (template.contains("index.vue.vm" )) {
return "main" + File.separator + "resources" + File.separator + "elementui" + File.separator + "src" + File.separator + "views" +
File.separator + className.toLowerCase() + File.separator + "index.vue";
}
if (template.contains("add-or-update.vue.vm" )) {
return "main" + File.separator + "resources" + File.separator + "elementui" + File.separator + "src" + File.separator + "views" +
File.separator + className.toLowerCase() + File.separator +"add-or-update.vue";
}
if (template.contains("index.js.vm" )) {
return "main" + File.separator + "resources" + File.separator + "elementui" + File.separator + "src" + File.separator + "api" +
File.separator+ "modules" + File.separator + className.toLowerCase() + ".js";
}
return null;
}
}
