IDEA 快速生成实体

第一步 ： 打开DataBase面板，然后连接数据库。

第二步： 创建 Generate MyPOJOs.groovy文件
文件内容如下： 根据需要调整代码，可以生成不同格式的实体

import com.intellij.database.model.DasTable
import com.intellij.database.util.Case
import com.intellij.database.util.DasUtil
import java.io.*
/*
 * Available context bindings:
 *   SELECTION   Iterable<DasObject>
 *   PROJECT     project
 *   FILES       files helper
 */

packageName = "com.xxx.busi.entity;;"
typeMapping = [
        (~/(?i)int/)                      : "Long",
        (~/(?i)float|double|decimal|real/): "Double",
        (~/(?i)datetime|timestamp/)       : "java.util.Date",
        (~/(?i)date/)                     : "java.util.Date",
        (~/(?i)time/)                     : "java.util.Date",
        (~/(?i)/)                         : "String"
]

FILES.chooseDirectoryAndSave("Choose directory", "Choose where to store generated files") { dir ->
    SELECTION.filter { it instanceof DasTable }.each { generate(it, dir) }
}

def generate(table, dir) {
    def tableNameDispose = table.getName().substring(0, table.getName().length())
    out.println tableNameDispose
    def className = javaName(tableNameDispose, true)
    out.println className
    def fields = calcFields(table)
    PrintWriter output = new PrintWriter(new OutputStreamWriter(new FileOutputStream( new File(dir, className + ".java")), "utf-8"))
    output.withPrintWriter { out -> generate(out, className, fields,table.getName()) }
}

def generate(out, className, fields,tableName) {
    out.println "package $packageName"
    out.println "import java.io.Serializable;"
    out.println "import javax.persistence.Entity;"
    out.println "import javax.persistence.Table;"
    out.println ""
    //out.println "@Entity"
    //out.println "@Table(name = \"${tableName}\")"
    out.println "public class $className implements Serializable{"
    out.println ""
    def msum= (long)(Math.random()*1000000000000000000+1000000000000000000)
    out.println  "  private static final long serialVersionUID = ${msum}L;"
    fields.each() {
        if (isNotEmpty(it.commoent)) {
            out.println ""

            out.println "\t/**"
            out.println "\t * ${it.commoent}"
            out.println "\t */"
        }
        if (it.annos != "") out.println "  ${it.annos}"
        out.println "  private ${it.type} ${it.name};"
    }
    out.println ""
    fields.each() {
        out.println ""
        out.println "  public ${it.type} get${it.name.capitalize()}() {"
        out.println "    return ${it.name};"
        out.println "  }"
        out.println ""
        out.println "  public void set${it.name.capitalize()}(${it.type} ${it.name}) {"
        out.println "    this.${it.name} = ${it.name};"
        out.println "  }"
        out.println ""
    }
    out.println "}"
}

def calcFields(table) {
    DasUtil.getColumns(table).reduce([]) { fields, col ->
        def spec = Case.LOWER.apply(col.getDataType().getSpecification())
        def typeStr = typeMapping.find { p, t -> p.matcher(spec).find() }.value
        fields += [[
                           name : javaName(col.getName(), false),
                           type : typeStr,
                           commoent: col.getComment(),
                           annos: ""]]
    }
}

def javaName(str, capitalize) {
    def s = com.intellij.psi.codeStyle.NameUtil.splitNameIntoWords(str)
            .collect { Case.LOWER.apply(it).capitalize() }
            .join("")
            .replaceAll(/[^\p{javaJavaIdentifierPart}[_]]/, "_")
    capitalize || s.length() == 1? s : Case.LOWER.apply(s[0]) + s[1..-1]
}
def isNotEmpty(content) {
    return content != null && content.toString().trim().length() > 0
}

第三步： 生成实体

如图选中需要生成实体的表：
然后右键 -> Scripted Extensions -> Generate MyPOJOs.groovy , 然后弹出窗口，选择生成实体位置

打开生成的文件如下：

package com.xxx.busi.entity;;
import java.io.Serializable;
import javax.persistence.Entity;
import javax.persistence.Table;

public class ActEvtLog implements Serializable{

  private static final long serialVersionUID = 1113433628863057152L;
  private Long logNr;
  private String type;
  private String procDefId;
  private String procInstId;
  private String executionId;
  private String taskId;
  private java.util.Date timeStamp;
  private String userId;
  private String data;
  private String lockOwner;
  private java.util.Date lockTime;
  private Long isProcessed;


  public Long getLogNr() {
    return logNr;
  }

  public void setLogNr(Long logNr) {
    this.logNr = logNr;
  }


  public String getType() {
    return type;
  }

  public void setType(String type) {
    this.type = type;
  }


  public String getProcDefId() {
    return procDefId;
  }

  public void setProcDefId(String procDefId) {
    this.procDefId = procDefId;
  }


  public String getProcInstId() {
    return procInstId;
  }

  public void setProcInstId(String procInstId) {
    this.procInstId = procInstId;
  }


  public String getExecutionId() {
    return executionId;
  }

  public void setExecutionId(String executionId) {
    this.executionId = executionId;
  }


  public String getTaskId() {
    return taskId;
  }

  public void setTaskId(String taskId) {
    this.taskId = taskId;
  }


  public java.util.Date getTimeStamp() {
    return timeStamp;
  }

  public void setTimeStamp(java.util.Date timeStamp) {
    this.timeStamp = timeStamp;
  }


  public String getUserId() {
    return userId;
  }

  public void setUserId(String userId) {
    this.userId = userId;
  }


  public String getData() {
    return data;
  }

  public void setData(String data) {
    this.data = data;
  }


  public String getLockOwner() {
    return lockOwner;
  }

  public void setLockOwner(String lockOwner) {
    this.lockOwner = lockOwner;
  }


  public java.util.Date getLockTime() {
    return lockTime;
  }

  public void setLockTime(java.util.Date lockTime) {
    this.lockTime = lockTime;
  }


  public Long getIsProcessed() {
    return isProcessed;
  }

  public void setIsProcessed(Long isProcessed) {
    this.isProcessed = isProcessed;
  }

}