1、ToStringBuilder

1. //对象及其属性一行显示
2. System.out.println(ToStringBuilder.reflectionToString(u));
3. System.out.println(ToStringBuilder.reflectionToString(u, ToStringStyle.DEFAULT_STYLE));
4. //属性换行显示
5. System.out.println(ToStringBuilder.reflectionToString(u, ToStringStyle.MULTI_LINE_STYLE));
6. //不显示属性名，只显示属性值，在同一行显示
7. System.out.println(ToStringBuilder.reflectionToString(u, ToStringStyle.NO_FIELD_NAMES_STYLE));
8. //对象名称简写
9. System.out.println(ToStringBuilder.reflectionToString(u, ToStringStyle.SHORT_PREFIX_STYLE));
10. //只显示属性
11. System.out.println(ToStringBuilder.reflectionToString(u, ToStringStyle.SIMPLE_STYLE));

结果显示：

[email protected][name=zhengtian,age=25] 
[email protected][name=zhengtian,age=25] 
[email protected][ 
  name=zhengtian 
  age=25 
] 
[email protected][zhengtian,25] 
User[name=zhengtian,age=25] 
zhengtian,25