基于java图书馆借阅管理系统

图书馆借阅管理系统是基于java编程语言和mysql数据库设计，本系统分为读者用户和管理员两个角色，其中用户可以注册后登陆系统，查看图书信息，在线借阅图书，查看借阅历史记录，热门图书，在线反馈等；管理员登陆后，可以管理图书，用户，借阅信息，图书分类，反馈等信息。本设计功能齐全，界面整洁，功能齐全，适合作为java毕业设计和课程设计参考学习。

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一.技术环境

jdk版本：1.8 及以上
IDE工具：eclipse
java框架：servlet+jsp
数据库: mysql 及5.5 以上
编程语言: Java
tomcat: 8.0 及以上
详细技术：HTML+CSS+JS+JSP+JAVA+SERVLET+MYSQL+JQUERY

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二.项目文件

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三.系统功能

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四.代码示例

package com.lmu.controller;

/**
 * 用户新增
 */

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
import com.lmu.model.Role;
import com.lmu.model.User;
import com.lmu.service.RoleService;
import com.lmu.service.UserService;
import com.lmu.utils.JsonUtils;
import com.lmu.utils.Pager;
import com.lmu.utils.UserUtils;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;

import java.awt.event.FocusEvent;
import java.io.IOException;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

@Controller("userController")
@Scope("prototype")
public class UserController extends ActionSupport implements ModelDriven<User> {
    @Autowired
    private UserService userService;
    @Autowired
    private RoleService roleService;
    private User user;
    private Integer userId;
    private Map<String, Object> map = new HashMap();


    /**
     * list
     *
     * @return
     */
    public String list() throws IOException {
        User user1 = UserUtils.getUser();
        if (user1 == null || user1.getId() == null){
            ActionContext.getContext().put("login", 1);
            return SUCCESS;
        }
        Pager<User> pagers = null;
        Role role = user1.getRole();
        if (role.getEnName().equals("admin")) {
            pagers = userService.getList(user);
            ActionContext.getContext().put("pagers", pagers);
            ActionContext.getContext().put("user", user1);
            ActionContext.getContext().put("role", role);
            ActionContext.getContext().put("bean", user);
            return SUCCESS;
        } else if (role.getEnName().equals("xs") || role.getEnName().equals("js")) {
            pagers = userService.getList(user1);
            ActionContext.getContext().put("pagers", pagers);
            ActionContext.getContext().put("bean", user);
            return SUCCESS;
        }
        return null;
    }



    /**
     * 跳转add
     *
     * @return
     */
    public String add() {
        Pager<Role> pagers = roleService.pagers();
        ActionContext.getContext().put("pagers", pagers);
        return SUCCESS;
    }

    /**
     * 查询修改
     *
     * @return
     */
    public String edit() {
        User bean = userService.findById(userId);
        Pager<Role> pagers = roleService.pagers();
        ActionContext.getContext().put("bean", bean);
        ActionContext.getContext().put("pagers", pagers);
        return SUCCESS;
    }


    /**
     * 审核
     *
     * @return
     */
    public void updateSh() throws IOException {
        user.setIsSh(1);
        userService.updates(user);
        map.put("flag", true);
        map.put("url", "user_list.do");
        JsonUtils.toJson(map);
    }

    /**
     * 更新
     *
     * @return
     */
    public String update() throws IOException {
        if (user.getPass().equals("")){
            user.setPass(null);
        }
        userService.updates(user);
        map.put("flag", true);
        map.put("url", "user_list.do");
        JsonUtils.toJson(map);
        return SUCCESS;
    }

    /**
     * 保存
     *
     * @return
     */
    public void save() throws IOException {
        if (userService.getUser(user) != null){
            map.put("flag", false);
            map.put("url", "login_login.do");
            JsonUtils.toJson(map);
        } else {
            user.setTime(new Date());
            userService.save(user);
            map.put("flag", true);
            map.put("url", "login_login.do");
            JsonUtils.toJson(map);
        }
    }

    public void delete() throws IOException {
        User user1 = userService.findById(userId);
        user1.setIsDelete(1);
        userService.update(user1);
        map.put("flag", true);
        map.put("url", "user_list.do");
        JsonUtils.toJson(map);
    }

    @Override
    public User getModel() {
        if (user == null) {
            user = new User();
        }
        return user;
    }

    public Integer getUserId() {
        return userId;
    }

    public void setUserId(Integer userId) {
        this.userId = userId;
    }

    public User getUser() {
        return user;
    }

    public void setUser(User user) {
        this.user = user;
    }
}

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package com.lmu.controller;
/**
 * 和登陆有关的都在这里
 */

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.lmu.model.Role;
import com.lmu.model.User;
import com.lmu.service.RoleService;
import com.lmu.service.UserService;
import com.lmu.utils.JsonUtils;
import com.lmu.utils.UserUtils;

import org.apache.commons.collections.map.HashedMap;
import org.apache.struts2.ServletActionContext;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

@Controller("loginController")
@Scope("prototype")
public class LoginController extends ActionSupport {
    @Autowired
    private UserService userService;
    @Autowired
    private RoleService roleService;
    private User user;
    private Map<String, Object> map = new HashMap();
    public User getUser() {
        return user;
    }

    public void setUser(User user) {
        this.user = user;
    }

    public UserService getUserService() {
        return userService;
    }

    public void setUserService(UserService userService) {
        this.userService = userService;
    }

    /**
 * 用户登陆
 * @return
 */
	public void index() throws IOException {
       User user1 = userService.getUser(user);
        if (user1 != null){
            if (user1.getIsSh() == 1){
                if (user1.getRole().getEnName().equals("admin")){
                    ActionContext.getContext().getSession().put("user", user1);
                }
                if (user1.getRole().getEnName().equals("js")){
                    ActionContext.getContext().getSession().put("user1", user1);
                }
                if (user1.getRole().getEnName().equals("xs")){
                    ActionContext.getContext().getSession().put("user2", user1);
                }
                map.put("flag", 1);
                map.put("url", "login_indexs.do");
                map.put("id", user1.getId());
                JsonUtils.toJson(map);
            } else {
                map.put("flag", 2);
                JsonUtils.toJson(map);
            }
        } else {
            map.put("flag", 3);
            JsonUtils.toJson(map);
        }
    }

    public String indexs() throws IOException {
        User u = UserUtils.getUser();
        if (u != null){
            ActionContext.getContext().put("user", u);
            String ss = u.getRole().getEnName();
            ActionContext.getContext().put("role", u.getRole().getEnName());
        }
        return SUCCESS;
    }
	//登陆页面
	public String login() {

        return SUCCESS;
	}

   //退出
	public String tuichu() {
		ActionContext ac = ActionContext.getContext();
		Map session = ac.getSession();
		session.remove("userName");
		session.remove("userId");
		ServletActionContext.getRequest().getSession().invalidate();
		return "login";
	}

}

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五.项目截图