person bean是这样的：

1. package cn.study.beanutils;
   
2. 
   
3. import java.util.Date;
   
4. 
   
5. public class Person {
   
6.         private String name;
   
7.         private int age;
   
8.         private String password;
   
9.         private Date birthday;
   
10.        
    
11.         public Date getBirthday() {
    
12.                 return birthday;
    
13.         }
    
14.         public void setBirthday(Date birthday) {
    
15.                 this.birthday = birthday;
    
16.         }
    
17.         public String getName() {
    
18.                 return name;
    
19.         }
    
20.         public void setName(String name) {
    
21.                 this.name = name;
    
22.         }
    
23.         public int getAge() {
    
24.                 return age;
    
25.         }
    
26.         public void setAge(int age) {
    
27.                 this.age = age;
    
28.         }
    
29.         public String getPassword() {
    
30.                 return password;
    
31.         }
    
32.         public void setPassword(String password) {
    
33.                 this.password = password;
    
34.         }
    
35.        
    
36.        
    
37. }
    

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用BeanUtils的第三方类库操作Java bean：

1.         @Test
   
2.         public void test2() throws Exception {
   
3.                 Class clazz = Class.forName("cn.study.beanutils.Person");
   
4.                 Person p = (Person) clazz.newInstance();
   
5. 
   
6.                 ConvertUtils.register(new DateConverter(), Date.class);               
   
7.                
   
8.                 // setProperty
   
9.                 //BeanUtils.setProperty(p, "name", "tome");
   
10.                
    
11.                 BeanUtils.setProperty(p, "birthday", "1999-01-01");               
    
12.                 System.out.println(BeanUtils.getProperty(p, "birthday"));
    
13.                
    
14.         }

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运行时，有异常抛出，不知道为什么？

1. org.apache.commons.beanutils.ConversionException: DateConverter does not support default String to 'Date' conversion.
   
2.         at org.apache.commons.beanutils.converters.DateTimeConverter.toDate(DateTimeConverter.java:468)
   
3.         at org.apache.commons.beanutils.converters.DateTimeConverter.convertToType(DateTimeConverter.java:343)
   
4.         at org.apache.commons.beanutils.converters.AbstractConverter.convert(AbstractConverter.java:156)
   
5.         at org.apache.commons.beanutils.ConvertUtilsBean.convert(ConvertUtilsBean.java:470)
   
6.         at org.apache.commons.beanutils.BeanUtilsBean.setProperty(BeanUtilsBean.java:1006)
   
7.         at org.apache.commons.beanutils.BeanUtils.setProperty(BeanUtils.java:456)
   
8.         at cn.study.beanutils.Demo1.test2(Demo1.java:38)
   
9.         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   
10.         at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    
11.         at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    
12.         at java.lang.reflect.Method.invoke(Unknown Source)
    
13.         at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
    
14.         at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    
15.         at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
    
16.         at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
    
17.         at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
    
18.         at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
    
19.         at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
    
20.         at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
    
21.         at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
    
22.         at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
    
23.         at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
    
24.         at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
    
25.         at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
    
26.         at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    
27.         at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
    
28.         at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    
29.         at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    
30.         at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
    
31. 
    

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各位大侠，能帮忙看看问题吗？

person bean是这样的：

1. package cn.study.beanutils;
   
2. 
   
3. import java.util.Date;
   
4. 
   
5. public class Person {
   
6.         private String name;
   
7.         private int age;
   
8.         private String password;
   
9.         private Date birthday;
   
10.        
    
11.         public Date getBirthday() {
    
12.                 return birthday;
    
13.         }
    
14.         public void setBirthday(Date birthday) {
    
15.                 this.birthday = birthday;
    
16.         }
    
17.         public String getName() {
    
18.                 return name;
    
19.         }
    
20.         public void setName(String name) {
    
21.                 this.name = name;
    
22.         }
    
23.         public int getAge() {
    
24.                 return age;
    
25.         }
    
26.         public void setAge(int age) {
    
27.                 this.age = age;
    
28.         }
    
29.         public String getPassword() {
    
30.                 return password;
    
31.         }
    
32.         public void setPassword(String password) {
    
33.                 this.password = password;
    
34.         }
    
35.        
    
36.        
    
37. }
    

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用BeanUtils的第三方类库操作Java bean：

1.         @Test
   
2.         public void test2() throws Exception {
   
3.                 Class clazz = Class.forName("cn.study.beanutils.Person");
   
4.                 Person p = (Person) clazz.newInstance();
   
5. 
   
6.                 ConvertUtils.register(new DateConverter(), Date.class);               
   
7.                
   
8.                 // setProperty
   
9.                 //BeanUtils.setProperty(p, "name", "tome");
   
10.                
    
11.                 BeanUtils.setProperty(p, "birthday", "1999-01-01");               
    
12.                 System.out.println(BeanUtils.getProperty(p, "birthday"));
    
13.                
    
14.         }

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运行时，有异常抛出，不知道为什么？

1. org.apache.commons.beanutils.ConversionException: DateConverter does not support default String to 'Date' conversion.
   
2.         at org.apache.commons.beanutils.converters.DateTimeConverter.toDate(DateTimeConverter.java:468)
   
3.         at org.apache.commons.beanutils.converters.DateTimeConverter.convertToType(DateTimeConverter.java:343)
   
4.         at org.apache.commons.beanutils.converters.AbstractConverter.convert(AbstractConverter.java:156)
   
5.         at org.apache.commons.beanutils.ConvertUtilsBean.convert(ConvertUtilsBean.java:470)
   
6.         at org.apache.commons.beanutils.BeanUtilsBean.setProperty(BeanUtilsBean.java:1006)
   
7.         at org.apache.commons.beanutils.BeanUtils.setProperty(BeanUtils.java:456)
   
8.         at cn.study.beanutils.Demo1.test2(Demo1.java:38)
   
9.         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   
10.         at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    
11.         at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    
12.         at java.lang.reflect.Method.invoke(Unknown Source)
    
13.         at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
    
14.         at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    
15.         at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
    
16.         at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
    
17.         at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
    
18.         at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
    
19.         at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
    
20.         at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
    
21.         at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
    
22.         at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
    
23.         at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
    
24.         at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
    
25.         at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
    
26.         at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    
27.         at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
    
28.         at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    
29.         at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    
30.         at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
    
31. 
    

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各位大侠，能帮忙看看问题吗？