开源项目Springboot_v2真香系列

@GetMapping("/one")
  @RequiresPermissions("system:autocode:one")
    public String one(ModelMap model)
    {  
    String str="单表代码生成";
    setTitle(model, new TitleVo("生成", str+"管理", true,"欢迎进入"+str+"页面", true, false));
    //查询表名  引擎
    List<TsysTables> tables=generatorService.queryList(null);
    //查询表对应权限
    List<TsysPermission> permissions= sysPermissionService.list2(null) ;
    model.addAttribute("tables", tables);
    model.addAttribute("permissions", permissions);
        return prefix + "/one";
    }

@PostMapping("/saveOne")
  @ResponseBody
  public AjaxResult saveOne(String allColumnss,String tableName,String conditionQueryField,String pid,int sqlcheck) throws Exception{
    JSONArray array= JSONUtil.parseArray(allColumnss);
    //遗留可用前端修改传入的字段等信息（未完善）
    List<BeanColumn> beanColumns2=JSONUtil.toList(array, BeanColumn.class);
    List<TsysTables> list= generatorService.queryList(tableName);
    if(list.size()>0) {
      TsysTables tables=list.get(0);
      List<BeanColumn> beanColumns= generatorService.queryColumns2(tableName);
      AutoCodeUtil.autoCodeOneModel(sysUtilService,tables, beanColumns,conditionQueryField,pid,sqlcheck);
    }
    return AjaxResult.success();
  }
  
  autoCodeOneModel方法
  public static void autoCodeOneModel(SysUtilService sysUtilService,TsysTables tables,List<BeanColumn> beanColumns,String conditionQueryField,String pid,int sqlcheck){
     //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);
    
    GlobalConfig globalConfig= AutoCodeConfig.getGlobalConfig();
    Map<String, Object> map = new HashMap<>();
        //数据库表数据
    map.put("TsysTables",tables);
        //字段集合
        map.put("beanColumns",beanColumns);
        //配置文件
        map.put("globalConfig",globalConfig);
        map.put("datetime",new DateTime());
        map.put("pid",pid);
        map.put("sqlcheck",sqlcheck);
        map.put("conditionQueryField",conditionQueryField);
        map.put("conditionQueryField_a",com.fc.test.util.StringUtils.firstLowerCase(conditionQueryField));
        map.put("SnowflakeIdWorker", SnowflakeIdWorker.class);
        //需要导入的java类
        map.put("JavaClassPackages", getJavaClassPackage(beanColumns));
        VelocityContext context = new VelocityContext(map);
        
      //获取模板列表
        List<String> templates = getTemplates();
        for (String template : templates) {
          try {
            if(template.contains("menu.sql.vm")) {
              if(sqlcheck==1) {//执行sql
                Template tpl = Velocity.getTemplate(template, "UTF-8" );
                  StringWriter sw = new StringWriter(); 
                  tpl.merge(context, sw);
                  System.out.println(sw);
                  executeSQL(sysUtilService, sw.toString());
              }else {//只输出
                Template tpl = Velocity.getTemplate(template, "UTF-8" );
                  StringWriter sw = new StringWriter(); 
                  tpl.merge(context, sw);
                  System.out.println(sw);
              }
              
            }else {
              String filepath=getCoverFileName(template,tables.getTableModel_a() ,tables.getTableModel(),globalConfig.getParentPack() , "model","gen");
                Template tpl = Velocity.getTemplate(template, "UTF-8" );
            File file = new File(filepath);
            if (!file.getParentFile().exists())
                    file.getParentFile().mkdirs();
                if (!file.exists())
                    file.createNewFile();
          try (FileOutputStream outStream = new FileOutputStream(file);
             OutputStreamWriter writer = new OutputStreamWriter(outStream, "UTF-8");
             BufferedWriter sw = new BufferedWriter(writer)) {
            tpl.merge(context, sw);
            sw.flush();
            System.out.println("成功生成Java文件:" + filepath);
          }
            }
            
          } catch (IOException e) {
                try {
          throw new Exception("渲染模板失败，表名：" +tables.getTableName()+"\n"+e.getMessage());
        } catch (Exception e1) {
          e1.printStackTrace();
        }
            }
        }
  }
  其中VelocityContext非常类似hashtable 是上面提到的velocity语法
  
  GlobalConfig用于自动生成配置文件类

this.jvmSpecInfo=SystemUtil.getJvmSpecInfo();
    //取得Java Virtual Machine Implementation的信息
    this.jvmInfo=SystemUtil.getJvmInfo();
    //取得Java Specification的信息
    this.javaSpecInfo=SystemUtil.getJavaSpecInfo();
    //取得Java Implementation的信息
    this.javaInfo=SystemUtil.getJavaInfo();
    //取得当前运行的JRE的信息
    this.javaRuntimeInfo=SystemUtil.getJavaRuntimeInfo();
    //取得OS的信息
    this.osInfo=SystemUtil.getOsInfo();
    //取得User的信息
    this.userInfo=SystemUtil.getUserInfo();
    //取得Runtime的信息
    this.runtimeInfo=SystemUtil.getRuntimeInfo();
    //取得Host的信息
    this.hostInfo=SystemUtil.getHostInfo();
    //JDK启动时间
    this.startTime=getStartTime();
    //JDK运行时间
    this.runTime=getRunTime();
    //获得JVM最大内存
    this.maxMemory = FileUtil.readableFileSize(SystemUtil.getRuntimeInfo().getMaxMemory());
    //获得JVM已分配内存
    this.totalMemory = FileUtil.readableFileSize(SystemUtil.getRuntimeInfo().getTotalMemory());
    //获得JVM已分配内存中的剩余空间
    this.freeMemory = FileUtil.readableFileSize(SystemUtil.getRuntimeInfo().getFreeMemory());
    //JVM最大可用内存
    this.usableMemory = FileUtil.readableFileSize(SystemUtil.getRuntimeInfo().getUsableMemory());

https://gitee.com/bdj/SpringBoot_v2