使用XMLEncoder和XMLDecoder对xml进行序列化和反序列化

public class AAA
{
     private String a;
     private String b;

     public String getA()
     {
         return a;
     }

      public void setA(String a)
     {
         this.a = a;
     }

   public String getB()
     {
         return b;
     }

      public void setB(String b)
     {
         this.b = b;
     }
}

public AAA read(final String path) {
        File file = new File(path);
        if (file.exists()) {
            try {
                XMLDecoder decoder = new XMLDecoder(new FileInputStream(file));
                AAA a = (AAA) decoder.readObject();
                return a;
            } catch (FileNotFoundException e) {
                log.error("加载配置信息异常：" + file.getPath(), e);
                throw new RuntimeException("加载配置信息失败：" + e.getMessage());
            }
        } else {
            throw new RuntimeException("找不到系统配置文件：" + file.getPath());
        }
    }

    public void save(AAA a, final String path) {
        File file = new File(path);
        try {
            XMLEncoder encoder = new XMLEncoder(new FileOutputStream(file));
            encoder.writeObject(a);
            encoder.close();
        } catch (Exception e) {
            log.error("保存配置文件异常：" + file.getPath());
            throw new RuntimeException("保存配置文件失败：" + e.getMessage());
        }
    }