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基本上我正在处理表格。一般来说，我的申请包括几个步骤：

登录表单（用户可以使用其用户名和密码登录）
MyForm （用户完成并将表单发送到数据库）

很简单。但这里有一件重要的事情。我如何显示“MyForm”？当用户键入其用户名和密码时，应用程序将进入数据库并检查用户用户名是否已完成表单。根据这个条件，我使用适当的数据库列映射/填充MyForm对象属性（带有setter）。

显然，我可以说两个不同的MyForm对象 - 一个用户是新用户，另一个用户已经知道用户。这就是诀窍。我必须将MyForm对象传递给负责显示整个事物的MyFormController。 Ok View负责显示，但你明白我的观点。

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LoginController.java

package si.src.controllers;

import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import si.src.forms.Login;
import si.src.forms.Obrazec;
import si.src.services.LoginService;
import si.src.services.ObrazecService;
import si.src.validators.LoginValidator;

@Controller
public class LoginController{

    private LoginService loginService;
    private ObrazecService obrazecService;

    private static Log log = LogFactory.getLog(LoginController.class);

    /**
     * Creates an object Login in which user information
     * (user name and password) is stored.
     * @return ModelAndView see "login.jsp" for view
     */
    @RequestMapping(value="/login", method=RequestMethod.GET)
    public ModelAndView login(){
        //System.out.println("Bla");
        Login userLogin=new Login();
        return new ModelAndView("login", "loginForm", userLogin);
    }

    /**
     * Data binding between form with modelAttribute="loginForm" (see "login.jsp") 
     * and object Login. In addition user information validation is performed.
     * @param login contains user information i.e. user name and password
     * @param error represent the validation results
     * @return view to render
     */
    @RequestMapping(value="/login", method=RequestMethod.POST)
    public String signIn(@ModelAttribute("loginForm") Login login,  BindingResult error){   


        LoginValidator validator = new LoginValidator();
        validator.validate(login, error);

        //returns string
        String res = loginService.login(login);
        System.out.println("You shall not pass: " + res);
        //System.out.println(login.getUsername());
        //System.out.println(login.getPassword());

        if(error.hasErrors()){
            return "login";
        }else{
            Obrazec obr = obrazecService.getObrazec();
            System.out.println(obr.getPrviDelSekStiriDrugo());
            //resolves to /WEB-INF/jsp/successfulLogin.jsp
            return "successfulLogin";
        }

    }

    @RequestMapping(value="/logout", method=RequestMethod.GET)
    public ModelAndView logOut(){           
        //System.out.println("Win");
        Login userLogin=new Login();
        return new ModelAndView("login", "loginForm", userLogin);
    }

    /**
     * Injected by Spring
     * @param loginService
     */
    public void setLoginService(LoginService loginService) {
        this.loginService = loginService;
    }

    /**
     * Injected by Spring
     * @param obrazecService
     */
    public void setObrazecService(ObrazecService obrazecService) {
        this.obrazecService = obrazecService;
    }
}

ObrazecController.java

package si.src.controllers;

import java.util.Iterator;
import java.util.List;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import si.src.forms.Obrazec;
import si.src.services.ObrazecService;

@Controller
public class ObrazecController {

    private ObrazecService obrazecService;  

    private static Log log = LogFactory.getLog(ObrazecController.class);

    /**
     * Creates an object Obrazec which presents a specific
     * form with its fields.
     * @return ModelAndView see("obrazec.jsp") for view
     */
    @RequestMapping(value="/obrazec", method=RequestMethod.GET)
    public ModelAndView obtainTheFrom(){
        Obrazec obrazec = new Obrazec();
        return new ModelAndView("obrazec", "obrazecForm", obrazec);
    }

    @RequestMapping(value="/obrazec", method=RequestMethod.POST, params="save")
    public String submitTheFrom(@ModelAttribute("obrazecForm") Obrazec obrazec, BindingResult errors){      

        String ipAddress="IPv4";
        String oddan="D";

        // Test 1 - OK (check the DB)
        //obrazecService.sendForm(obrazec, ipAddress, oddan);

        // Test 2 - OK (check the DB)
        // obrazecService.sendZavezanci(obrazec.getSeznamZavezancev());

        // Test 3 - OK (check the DB)
        //obrazecService.submitForm(obrazec);

        // Test 4 -  
        //Obrazec o = obrazecService.getObrazec();
        //System.out.println(o.getNazivOrgana());

        // Test 5
        /*
        List<String> seznamZavezancev = obrazecService.getSeznamZavezancev();   

        for (String s : seznamZavezancev){
            System.out.println(s);
        }*/

        //resolves to /WEB-INF/jsp/win.jsp
        return "win";
    }

    /**
     * Injected by Spring
     * @param loginService
     */
    public void setObrazecService(ObrazecService obrazecService) {
        this.obrazecService = obrazecService;
    }
}

有没有办法将一个对象从LoginController.java传递给ObrazecController.java。如果有不同的方法来处理这种情况，我们将非常感激！

谢谢！

在不同的控制器之间传递对象Spring Web MVC

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0 个答案: