Builgen 插件——IntelliJ IDEA和Eclipse Java Bean Builder模式代码生成器

Builgen-plugin

介绍

• builder模式在越来越多的项目中使用，类似于alibaba fastjson JSONObject.fluentPut()，调用一个方法后返回这个对象本身，特别适合构建一些参数超级多的对象，代码优雅且易读。构建一个对象变成了SomeObject some = new SomeObject().a("a").b("b").c("c").biuld();。
• ItellJ IDEA和Eclipse的generator只能生成传统的getter setter，后来IDEA新版本中可以选择builder模式，生成的setter方法不再返回void，而是返回对象本身，属于简易的builder模式，于是自己写了一个插件供参考，提供一种思路。
• 源码：Builgen-plugin

用法

eclipse

T测试环境:JDK 1.8 + Eclipse Oxygen Release (4.7.0)

• 复制Builgen_1.0.0.201708310007.jar 到eclipse的plugins目录。
• 删除目录下的eclipse\configuration\org.eclipse.update 文件夹.
• 重启ecplise加上-clean option(Windows:cmd->cd $dir_eclipse.exe->run cmd 'eclipse -clean')。
• 创建一个Java Bean。

  public class TestBean {
      private String mes;
      private int[] inteters;
      private List<String> strings;
      private List<Map<String, Object>> ddd;
      private boolean klk;
      private double dst;
  }

• 在左侧文件管理器内右键对应文件,在末尾点击Builgen 。

  

• 文件内容将被替换：

  public class TestBean {
      private String mes;
      private int[] inteters;
      private List<String> strings;
      private List<Map<String, Object>> ddd;
      private boolean klk;
      private double dst;
  
      public TestBean(TestBean testBean) {
          this.mes = testBean.getMes();
          this.inteters = testBean.getInteters();
          this.strings = testBean.getStrings();
          this.ddd = testBean.getDdd();
          this.klk = testBean.getKlk();
          this.dst = testBean.getDst();
      }
  
      public TestBean() {
      }
  
      public static class TestBeanBuilder {
          TestBean testBean;
  
          public TestBeanBuilder() {
              testBean = new TestBean();
          }
  
          public TestBeanBuilder mes(String mes) {
              testBean.setMes(mes);
              return this;
          }
  
          public TestBeanBuilder inteters(int[] inteters) {
              testBean.setInteters(inteters);
              return this;
          }
  
          public TestBeanBuilder strings(List<String> strings) {
              testBean.setStrings(strings);
              return this;
          }
  
          public TestBeanBuilder ddd(List<Map<String, Object>> ddd) {
              testBean.setDdd(ddd);
              return this;
          }
  
          public TestBeanBuilder klk(boolean klk) {
              testBean.setKlk(klk);
              return this;
          }
  
          public TestBeanBuilder dst(double dst) {
              testBean.setDst(dst);
              return this;
          }
  
          public TestBean build() {
              return new TestBean(this.testBean);
          }
      }
  
      public void setDst(double dst) {
          this.dst = dst;
      }
  
      public double getDst() {
          return this.dst;
      }
  
      public void setKlk(boolean klk) {
          this.klk = klk;
      }
  
      public boolean getKlk() {
          return this.klk;
      }
  
      public void setDdd(List<Map<String, Object>> ddd) {
          this.ddd = ddd;
      }
  
      public List<Map<String, Object>> getDdd() {
          return this.ddd;
      }
  
      public void setStrings(List<String> strings) {
          this.strings = strings;
      }
  
      public List<String> getStrings() {
          return this.strings;
      }
  
      public void setInteters(int[] inteters) {
          this.inteters = inteters;
      }
  
      public int[] getInteters() {
          return this.inteters;
      }
  
      public void setMes(String mes) {
          this.mes = mes;
      }
  
      public String getMes() {
          return this.mes;
      }
  }

IntelliJ IDEA

测试环境:JDK 1.8 + INTELLIJ IDEA COMMUNITY 2017.2.1

• 下载Builgen.jar
• File -> Settings -> plugins -> Install Plugins From Disk,选择下载的jar包并重启IDEA。

• 创建Java Bean在编辑器内右键呼出上下文菜单,然后点击 Generate -> Builgen.

  

• 和Eclipse输出结果一样，但是Builder类少了static，实在没找到IDEA插件能在那里加上这个修饰符，所以目前只能手动加。