Java写JavaBean代码生成器的EditPlus插件

一直很不习惯用Eclipse，觉得那家伙功能太花哨又笨重。还是喜欢用EditPlus手写，几乎平时的开发都用EditPlus，但有时又需要借助Eclipse生成JavaBean的get、set方法。那现在自己写一个JavaBean代码生成器插件，在EditPlus里调用。

 

BeanGenerator.java

 

package codegen; import java.io.File; import java.io.BufferedReader; import java.io.FileReader; import java.io.RandomAccessFile; import java.util.List; import java.util.ArrayList; public class BeanGenerator { //存放Bean的类名 private String className; //接收生成Bean的文件 private File file; //Bean属性和其属性对应的类型的元数据List private List bList = new ArrayList(); //写入流 private RandomAccessFile raf = null; //构造方法的参数字符串 private StringBuffer paramsBuffer = new StringBuffer(); //用来标识构造器参数何时加上"," private boolean bFirst = true; //解析Bean的属性和其属性对应的类型 private void parse(File file) throws Exception { //保存解析的Bean文件 this.file = file; //解析出类名 this.className = file.getName().substring(0, file.getName().indexOf(".")); //读取Bean文件 BufferedReader br = new BufferedReader(new FileReader(file)); String strLine = null; //逐行读取文件内容 while ((strLine = br.readLine()) != null) { //当行内容同时包含private关键字和";"号时则解析该行字符串 if (strLine.contains("private") && strLine.contains(";")) { //获取类型字符串第一个字符的起始位置 Integer leftLoc = strLine.indexOf("private ") + "private ".length(); //获取属性名最后一个字符的位置 Integer rightLoc = strLine.indexOf(";"); //解析出属性类型和属性名，数组[0]为属性类型，数组[1]为属性名 String[] tmpStr = strLine.substring(leftLoc, rightLoc).split(" "); //装Bean元数据封装并放入集合中 bList.add(new BeanInfo(tmpStr[0], tmpStr[1])); } } } //生成Bean的get、set方法和构造方法 private void generateSetGetConstructor() throws Exception { raf = new RandomAccessFile(file, "rw"); raf.seek(file.length() - 3); raf.writeBytes("/r/n"); //--------------------生成Bean的构造方法------------------- for (BeanInfo beanInfo : bList) { if (bFirst) { //第一次构造方法的参数后不加"," paramsBuffer.append(beanInfo.getType() + " " + beanInfo.getAttr()); bFirst = false; } else { //当参数列表过长时自动换行 if (paramsBuffer.length() >= 40) { paramsBuffer.append("/r/n/t/t" + ", " + beanInfo.getType() + " " + beanInfo.getAttr()); } else { paramsBuffer.append(", " + beanInfo.getType() + " " + beanInfo.getAttr()); } } } //解决中文问题输出时是乱码 raf.write("/t//无参数构造器/r/n".getBytes()); //无参数的构造器 raf.writeBytes("/tpublic " + className + "()/r/n/t{/r/n/t}/r/n"); //增加注释 raf.write("/t//初始化全部属性的构造器/r/n".getBytes()); raf.writeBytes("/tpublic " + className + "(" + paramsBuffer.toString() + ")" + "/r/n/t{/r/n"); for (BeanInfo beanInfo : bList) { raf.writeBytes("/t/t"); raf.writeBytes("this." + beanInfo.getAttr() + " = " + beanInfo.getAttr() + ";"); raf.writeBytes("/r/n"); } raf.writeBytes("/t}/r/n"); //---------------------------------------------------------- for (BeanInfo beanInfo : bList) { //增加注释 raf.writeBytes("/t//" + beanInfo.getAttr()); //解决中文问题输出时是乱码 raf.write("属性的setter和getter方法".getBytes()); raf.writeBytes("/r/n"); //--------------------生成Bean的set方法--------------------- raf.writeBytes("/tpublic void set" + beanInfo.getAttr().substring(0, 1).toUpperCase() + beanInfo.getAttr().substring(1) + "(" + beanInfo.getType() + " " + beanInfo.getAttr() + ")" + "/r/n"); raf.writeBytes("/t{" + "/r/n"); raf.writeBytes("/t/tthis." + beanInfo.getAttr() + " = " + beanInfo.getAttr() + ";" + "/r/n"); raf.writeBytes("/t}" + "/r/n"); //---------------------------------------------------------- //--------------------生成Bean的get方法--------------------- raf.writeBytes("/tpublic " + beanInfo.getType() + " get" + beanInfo.getAttr().substring(0, 1).toUpperCase() + beanInfo.getAttr().substring(1) + "()" + "/r/n"); raf.writeBytes("/t{" + "/r/n"); raf.writeBytes("/t/treturn " + beanInfo.getAttr() + ";" + "/r/n/t}/r/n"); //---------------------------------------------------------- } raf.writeBytes("}/r/n"); //关闭写入流 raf.close(); } public static void main(String[] args) throws Exception { BeanGenerator beanGen = new BeanGenerator(); beanGen.parse(new File(args[0])); beanGen.generateSetGetConstructor(); } }

 

BeanInfo.java

 

package codegen; //定义Bean属性和其属性类型的元数据类 class BeanInfo { private String type; private String attr; public BeanInfo(String type, String attr) { this.type = type; this.attr = attr; } public void setType(String type) { this.type = type; } public String getType() { return type; } public void setAttr(String attr) { this.attr = attr; } public String getAttr() { return attr; } }

 

配置环境变量，我的包放在D盘下：

 

 

EditPlus工具配置：

 

 

 

 EditPlus的工具栏：

 

配置好后，写一个简单的JavaBean属性测试下：

 

 

按下BeanGenerator工具的快捷键，我这里是Ctrl+3。生成get、set方法。