Question

ibatis spring struts2 ，插入时，报空指针；更新时，不报错！何解？？？

package test.weibokeywordaccount;

import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;
import ......
import ......[此处省略导入的包地址 ]
public class TestWeiboKeyWordAccount {

@Autowired
WeiboKeywordService service;

@Test
public void testInsertDiag(){
try{
WeiboKeyword key = new WeiboKeyword();
key.setId("2");
key.setKeyword("123");
key.setPlatform(5);
key.setStatusid("2");

service.idoInsert(key);

System.out.println("insert 成功！");
}catch (Exception e) {

e.printStackTrace();
}
}
}

异常信息：

java.lang.NullPointerException
at test.weibokeywordaccount.TestWeiboKeyWordAccount.testInsertDiag(TestWeiboKeyWordAccount.java:22)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)

Answer 1

单元测试都不是你这样的，service 肯定为空了。你还没有加载spring 的配置文件 ，也就是没有spring 的环境，autowried肯定找不到对象 了