Exception occurred during processing request: null java.lang.NullPointerExceptio
@SuppressWarnings("serial")
public class RoleAction extends ActionSupport{
private RoleService roleService;
private Yuangong yuanGong;
private List<Yuangong>yuangList = new ArrayList<Yuangong>(0);
private String keyWord;
public RoleService getRoleService() {
return roleService;
}
public void setRoleService(RoleService roleService) {
this.roleService = roleService;
}
public Yuangong getYuanGong() {
return yuanGong;
}
public void setYuanGong(Yuangong yuanGong) {
this.yuanGong = yuanGong;
}
public List<Yuangong> getYuangList() {
return yuangList;
}
public void setYuangList(List<Yuangong> yuangList) {
this.yuangList = yuangList;
}
public String getKeyWord() {
return keyWord;
}
public void setKeyWord(String keyWord) {
this.keyWord = keyWord;
}
/**
* 添加角色
* @return
*/
public String addRole(){
Yuangong yg = roleService.insertYG(yuanGong);
if(yg!=null){
return "success";
}
return "input";
public interface RoleService {
public Yuangong insertYG(Yuangong yuanGong);
public Yuangong deleteYG(Yuangong yuanGong);
public Yuangong upateYG(Yuangong yuanGong);
public Yuangong findByYgBH(String ygbh);
public List<Yuangong> findByKeyWord(String keyWord);
}
public class RoleServiceImpl implements RoleService {
private RoleDao roleDao;
public void setRoleDao(RoleDao roleDao) {
this.roleDao = roleDao;
}
@Override
public Yuangong insertYG(Yuangong yuanGong) {
return roleDao.insert(yuanGong);
}
public interface RoleDao {
public Yuangong insert(Yuangong yuanGong);
public Yuangong update(Yuangong yuanGong);
public Yuangong delete(Yuangong yuanGong);
public Yuangong findByYgBH(String ygbh);
public List<Yuangong> findByKeyWord(String keyWord);
}
public class RoleDaoImpl implements RoleDao {
/**
* 插入员工信息
* @param yuanGong
* @return
*/
@SuppressWarnings("unused")
@Override
public Yuangong insert(Yuangong yuanGong) {
//创建连接对象
DBMangger dbMangger = new DBMangger();
//SQL语句
String sql = "insert into YuanGong values("+yuanGong.getYgbh()+","+yuanGong.getYgxm()+"," +
""+yuanGong.getYgzh()+","+yuanGong.getYgmm()+","+yuanGong.getYgmm()+","
+yuanGong.getBmbh()+","+yuanGong.getStatus()+",sysdate)";
int i = dbMangger.executeUpdate(sql);
if(i>0){
System.out.println("执行成功");
return yuanGong;
}else{
System.out.println("保存失败");
return null;
}
}
[解决办法]
