从数据库里面查询然后生成一个对象时出问题了，百思不得其解，想请教一下各位大神！

[MajorTomZz]

java.lang.RuntimeException: java.sql.SQLException: Cannot create com.utin.domain.User: com.utin.domain.User Query: select * from users where name=? and password=? Parameters: [mhg, 123]
at com.utin.dao.impl.UserDaoImpl.findUser(UserDaoImpl.java:30)
at com.utin.service.impl.UserServiceImpl.login(UserServiceImpl.java:14)
at com.utin.test.UserTest.testLogin(UserTest.java:16)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: java.sql.SQLException: Cannot create com.utin.domain.User: com.utin.domain.User Query: select * from users where name=? and password=? Parameters: [mhg, 123]
at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:320)
at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:349)
at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:287)
at com.utin.dao.impl.UserDaoImpl.findUser(UserDaoImpl.java:27)
... 25 more
这是报的错误内容

public User findUser(String name, String password) {
		try {
			User user=qr.query("select * from users where name=? and password=?", new BeanHandler<User>(User.class),name,password);
			return user==null?null:user;
		} catch (SQLException e) {
			throw new RuntimeException(e);
		}
	}

这是代码

[花谢尊前不敢香]

user类提供了构造函数了吗，要有无参和有参的包含这俩属性的。

[MajorTomZz]

引用 1 楼 花谢尊前不敢香的回复:

user类提供了构造函数了吗，要有无参和有参的包含这俩属性的。

是的，我忘记，写无参构造函数了

[杜蕾斯的悲伤]

你返回的是一个List集合。我觉得应该用BeanlistHanlder然后返回一个集合，这就对了