Question

我是Spring的新手。我试图使用DBDAOImplementation内的条件if语句基于processController类返回的值呈现视图。我试图为成功场景返回successuseraddstatus jsp文件，为失败场景返回faileduseraddstatus jsp文件。

ProcessController.java：

@RequestMapping(value = "/adduserstatus", method = RequestMethod.POST)
public String addStudent(@ModelAttribute("SpringWeb")Process process,ModelMap model) {

    model.addAttribute("fname", process.getFname());
    model.addAttribute("lname", process.getLname());
    model.addAttribute("email", process.getEmail());
    model.addAttribute("phone", process.getPhone());

    ApplicationContext context = 
         new ClassPathXmlApplicationContext("Beans.xml");

    DBDAOImp dbd = 
         (DBDAOImp)context.getBean("JDBCTemplate");

    dbd.createuser(process.getFname(), process.getLname(), process.getEmail(), process.getPhone());

    if (true){ //This is where I am having trouble
        return "successuseraddstatus";
    } 
    return "faileduseraddstatus";
}

DBDAOImplementation.java：

@Override
public Boolean createuser(String fname, String lname, String email, String phone) {

    isExists(email);

    if (isExists==false){

        String SQL = "insert into USERS (user_id,f_name,l_name,creation_date,email,phone) values (seq_users.nextval,?,?,sysdate,?,?)";

        jdbcTemplateObject.update( SQL, fname,lname,email,phone);
        System.out.println("Created Record");
        return true;
    } else {
        return false;
    }
}

Answer 1

如果条件有效，则在下面。但我不太确定这是否是正确的做法。

ProcessController.java：

@RequestMapping(value = "/adduserstatus", method = RequestMethod.POST)
public String addStudent(@ModelAttribute("SpringWeb")Process process,ModelMap model) {
    model.addAttribute("fname", process.getFname());
    model.addAttribute("lname", process.getLname());
    model.addAttribute("email", process.getEmail());
    model.addAttribute("phone", process.getPhone());

     DBDAOImp dbd = 
         (DBDAOImp)context.getBean("JDBCTemplate");


     if (dbd.createuser(process.getFname(), process.getLname(), process.getEmail(), process.getPhone())){
      return "useraddstatus";
      } else {
          return "faileduseraddstatus";
      }
}

基于Spring中的条件语句呈现视图

1 个答案: