Java设计模块系列之书店管理系统单机版(三)

介绍

今天对系列二的一个添加用户的输入小bug进行了解决， 增加了用户模块的，删除用户，和修改用户模块。

下面的代码是相对于系列二来说进行了修改或者是增加的类.

先看addpanel类的修改：
在收集参数的时候进行防范就可防止那个bug了。

cn.hncu.bookstore.user.ui;

addpanel类：（添加用户模块）

/*
 * addpanel.java
 *
 * created on __date__, __time__
 */

package cn.hncu.bookstore.user.ui;

import javax.swing.jframe;
import javax.swing.joptionpane;

import cn.hncu.bookstore.common.usertypeenum;
import cn.hncu.bookstore.user.business.ebi.userebi;
import cn.hncu.bookstore.user.business.factory.userebifactory;
import cn.hncu.bookstore.user.vo.usermodel;
import cn.hncu.bookstore.util.fileioutil;

/**
 *
 * @author 陈浩翔
 */
public class addpanel extends javax.swing.jpanel {
 private jframe mainframe = null;

 /** creates new form addpanel */
 public addpanel(jframe mainframe) {
  this.mainframe = mainframe;
  initcomponents();
  myinitdata();
 }

 private void myinitdata() {
  for (usertypeenum type : usertypeenum.values()) {
   combtype.additem(type.getname());
  }
 }

 /** this method is called from within the constructor to
  * initialize the form.
  * warning: do not modify this code. the content of this method is
  * always regenerated by the form editor.
  */
 //gen-begin:initcomponents
 // <editor-fold defaultstate="collapsed" desc="generated code">
 private void initcomponents() {

  jlabel1 = new javax.swing.jlabel();
  jlabel2 = new javax.swing.jlabel();
  tfdname = new javax.swing.jtextfield();
  jlabel3 = new javax.swing.jlabel();
  tfduuid = new javax.swing.jtextfield();
  jlabel4 = new javax.swing.jlabel();
  tfdpwd2 = new javax.swing.jpasswordfield();
  jlabel5 = new javax.swing.jlabel();
  jlabel6 = new javax.swing.jlabel();
  combtype = new javax.swing.jcombobox();
  tfdpwd = new javax.swing.jpasswordfield();
  btnadd = new javax.swing.jbutton();
  btnback = new javax.swing.jbutton();

  setminimumsize(new java.awt.dimension(800, 600));
  setlayout(null);

  jlabel1.setfont(new java.awt.font("微软雅黑", 1, 48));
  jlabel1.setforeground(new java.awt.color(204, 0, 0));
  jlabel1.settext("\u6dfb\u52a0\u7528\u6237");
  add(jlabel1);
  jlabel1.setbounds(330, 30, 230, 80);

  jlabel2.setfont(new java.awt.font("微软雅黑", 0, 18));
  jlabel2.settext("\u7528\u6237\u7c7b\u578b:");
  add(jlabel2);
  jlabel2.setbounds(90, 310, 90, 30);

  tfdname.setfont(new java.awt.font("dialog", 1, 18));
  tfdname.setautoscrolls(false);
  add(tfdname);
  tfdname.setbounds(470, 160, 120, 30);

  jlabel3.setfont(new java.awt.font("微软雅黑", 0, 18));
  jlabel3.settext("uuid:");
  add(jlabel3);
  jlabel3.setbounds(120, 160, 50, 30);

  tfduuid.setfont(new java.awt.font("dialog", 1, 12));
  add(tfduuid);
  tfduuid.setbounds(190, 160, 110, 30);

  jlabel4.setfont(new java.awt.font("微软雅黑", 0, 18));
  jlabel4.settext("\u59d3\u540d:");
  add(jlabel4);
  jlabel4.setbounds(410, 160, 50, 30);

  tfdpwd2.setfont(new java.awt.font("宋体", 1, 18));
  add(tfdpwd2);
  tfdpwd2.setbounds(470, 240, 170, 30);

  jlabel5.setfont(new java.awt.font("微软雅黑", 0, 18));
  jlabel5.settext("\u5bc6\u7801:");
  add(jlabel5);
  jlabel5.setbounds(120, 240, 50, 30);

  jlabel6.setfont(new java.awt.font("微软雅黑", 0, 18));
  jlabel6.settext("\u786e\u8ba4\u5bc6\u7801:");
  add(jlabel6);
  jlabel6.setbounds(380, 240, 90, 30);

  combtype.setfont(new java.awt.font("dialog", 1, 18));
  combtype.setforeground(new java.awt.color(51, 51, 255));
  combtype.setmodel(new javax.swing.defaultcomboboxmodel(
    new string[] { "请选择..." }));
  add(combtype);
  combtype.setbounds(190, 310, 160, 30);

  tfdpwd.setfont(new java.awt.font("宋体", 1, 18));
  add(tfdpwd);
  tfdpwd.setbounds(190, 240, 160, 30);

  btnadd.setfont(new java.awt.font("dialog", 1, 24));
  btnadd.setforeground(new java.awt.color(0, 204, 204));
  btnadd.settext("\u6dfb\u52a0");
  btnadd.addactionlistener(new java.awt.event.actionlistener() {
   public void actionperformed(java.awt.event.actionevent evt) {
    btnaddactionperformed(evt);
   }
  });
  add(btnadd);
  btnadd.setbounds(190, 430, 120, 60);

  btnback.setfont(new java.awt.font("dialog", 1, 24));
  btnback.setforeground(new java.awt.color(0, 204, 204));
  btnback.settext("\u8fd4\u56de");
  btnback.addactionlistener(new java.awt.event.actionlistener() {
   public void actionperformed(java.awt.event.actionevent evt) {
    btnbackactionperformed(evt);
   }
  });
  add(btnback);
  btnback.setbounds(520, 430, 120, 60);
 }// </editor-fold>
 //gen-end:initcomponents

 private void back() {
  mainframe.setcontentpane(new listpanel(mainframe));
  mainframe.validate();
 }

 /**
  *监听返回按钮
  * @param 返回按钮的点击监听
  */
 private void btnbackactionperformed(java.awt.event.actionevent evt) {
  back();
 }

 private void btnaddactionperformed(java.awt.event.actionevent evt) {
  //1收集参数
  string uuid = tfduuid.gettext();
  string name = tfdname.gettext();
  string pwd = new string(tfdpwd.getpassword());
  string pwd2 = new string(tfdpwd2.getpassword());
  //system.out.println(uuid);

  //system.out.println(uuid+","+name+","+pwd);
  if (uuid.equals("") || uuid.equals(null)) {
   joptionpane.showmessagedialog(mainframe, "用户id为空，请重新输入！");
   return;
  }

  if (name.equals("") || name.equals(null)) {
   joptionpane.showmessagedialog(mainframe, "用户名为空，请重新输入！");
   return;
  }

  if (!pwd.equals(pwd2) || pwd.equals("") || pwd.equals(null)
    || pwd2.equals("") || pwd2.equals(null)) {
   joptionpane.showmessagedialog(mainframe, "两次密码输入不一致或密码为空，请重新输入！");
   return;
  }
  int type = 0;

  try {
   type = usertypeenum.gettypebyname(combtype.getselecteditem()
     .tostring());
  } catch (exception e) {
   joptionpane.showmessagedialog(mainframe, "请指定用户类型!");
   return;
  }

  //2组织参数
  usermodel user = new usermodel();
  user.setname(name);
  user.setpwd(pwd);
  user.settype(type);
  user.setuuid(uuid);

  //3调用逻辑层
  userebi ebi = userebifactory.getuserebi();

  //4根据调用返回结果导向不同页面
  if (ebi.create(user)) {
   back();
  } else {
   joptionpane.showmessagedialog(null, "该用户已经存在!");
  }
 }

 //gen-begin:variables
 // variables declaration - do not modify
 private javax.swing.jbutton btnadd;
 private javax.swing.jbutton btnback;
 private javax.swing.jcombobox combtype;
 private javax.swing.jlabel jlabel1;
 private javax.swing.jlabel jlabel2;
 private javax.swing.jlabel jlabel3;
 private javax.swing.jlabel jlabel4;
 private javax.swing.jlabel jlabel5;
 private javax.swing.jlabel jlabel6;
 private javax.swing.jtextfield tfdname;
 private javax.swing.jpasswordfield tfdpwd;
 private javax.swing.jpasswordfield tfdpwd2;
 private javax.swing.jtextfield tfduuid;
 // end of variables declaration//gen-end:variables

}

cn.hncu.bookstore.user.ui;

deletepanel类：（删除用户模块）

/*
 * deletepanel.java
 *
 * created on __date__, __time__
 */

package cn.hncu.bookstore.user.ui;

import javax.swing.jframe;
import javax.swing.joptionpane;

import cn.hncu.bookstore.common.usertypeenum;
import cn.hncu.bookstore.user.business.ebi.userebi;
import cn.hncu.bookstore.user.business.factory.userebifactory;
import cn.hncu.bookstore.user.vo.usermodel;
import cn.hncu.bookstore.util.fileioutil;

/**
 * 
 * @author 陈浩翔
 *
 * @version 1.0
 */
public class deletepanel extends javax.swing.jpanel {
 private jframe mainframe = null;
 private string uuid = null;

 /** creates new form deletepanel 
  * @param uuid */
 public deletepanel(jframe mainframe, string uuid) {
  this.mainframe = mainframe;
  this.uuid = uuid;
  initcomponents();
  myinitdata();
 }

 private void myinitdata() {
  userebi user = userebifactory.getuserebi();
  usermodel usermodel = user.getsingle(uuid);
  tfdname.settext(usermodel.getname());
  tfduuid.settext(usermodel.getuuid());
  tfdpwd.settext(usermodel.getpwd());
  tfdtype.settext(usertypeenum.getnamebytype(usermodel.gettype()));

  tfdname.seteditable(false);
  tfdpwd.seteditable(false);
  tfdtype.seteditable(false);
  tfduuid.seteditable(false);

 }

 //gen-begin:initcomponents
 // <editor-fold defaultstate="collapsed" desc="generated code">
 private void initcomponents() {

  jlabel1 = new javax.swing.jlabel();
  jlabel2 = new javax.swing.jlabel();
  tfdname = new javax.swing.jtextfield();
  jlabel3 = new javax.swing.jlabel();
  tfduuid = new javax.swing.jtextfield();
  jlabel4 = new javax.swing.jlabel();
  jlabel5 = new javax.swing.jlabel();
  tfdpwd = new javax.swing.jtextfield();
  tfdtype = new javax.swing.jtextfield();
  btnback = new javax.swing.jbutton();
  btndelete = new javax.swing.jbutton();

  setminimumsize(new java.awt.dimension(800, 600));
  setlayout(null);

  jlabel1.setfont(new java.awt.font("微软雅黑", 1, 48));
  jlabel1.setforeground(new java.awt.color(204, 0, 0));
  jlabel1.settext("\u5220\u9664\u7528\u6237");
  add(jlabel1);
  jlabel1.setbounds(330, 30, 230, 80);

  jlabel2.setfont(new java.awt.font("微软雅黑", 0, 18));
  jlabel2.settext("\u7528\u6237\u7c7b\u578b:");
  add(jlabel2);
  jlabel2.setbounds(100, 310, 90, 30);

  tfdname.setfont(new java.awt.font("dialog", 1, 18));
  tfdname.setautoscrolls(false);
  add(tfdname);
  tfdname.setbounds(480, 160, 120, 30);

  jlabel3.setfont(new java.awt.font("微软雅黑", 0, 18));
  jlabel3.settext("uuid:");
  add(jlabel3);
  jlabel3.setbounds(130, 160, 50, 30);

  tfduuid.setfont(new java.awt.font("dialog", 0, 11));
  add(tfduuid);
  tfduuid.setbounds(200, 160, 110, 30);

  jlabel4.setfont(new java.awt.font("微软雅黑", 0, 18));
  jlabel4.settext("\u59d3\u540d:");
  add(jlabel4);
  jlabel4.setbounds(420, 160, 50, 30);

  jlabel5.setfont(new java.awt.font("微软雅黑", 0, 18));
  jlabel5.settext("\u5bc6\u7801:");
  add(jlabel5);
  jlabel5.setbounds(130, 240, 50, 30);

  tfdpwd.setfont(new java.awt.font("tahoma", 1, 12));
  add(tfdpwd);
  tfdpwd.setbounds(200, 240, 160, 30);

  tfdtype.setfont(new java.awt.font("dialog", 1, 12));
  add(tfdtype);
  tfdtype.setbounds(200, 310, 160, 30);

  btnback.setfont(new java.awt.font("dialog", 1, 24));
  btnback.setforeground(new java.awt.color(0, 204, 204));
  btnback.settext("\u8fd4\u56de");
  btnback.addactionlistener(new java.awt.event.actionlistener() {
   public void actionperformed(java.awt.event.actionevent evt) {
    btnbackactionperformed(evt);
   }
  });
  add(btnback);
  btnback.setbounds(540, 450, 120, 60);

  btndelete.setfont(new java.awt.font("dialog", 1, 24));
  btndelete.setforeground(new java.awt.color(0, 204, 204));
  btndelete.settext("\u5220\u9664");
  btndelete.addactionlistener(new java.awt.event.actionlistener() {
   public void actionperformed(java.awt.event.actionevent evt) {
    btndeleteactionperformed(evt);
   }
  });
  add(btndelete);
  btndelete.setbounds(210, 450, 120, 60);
 }// </editor-fold>
 //gen-end:initcomponents

 private void btndeleteactionperformed(java.awt.event.actionevent evt) {
  //3调用逻辑层
  if (userebifactory.getuserebi().delete(uuid)) {
   back();
  } else {
   joptionpane.showmessagedialog(mainframe, "该用户已经不存在!");
  }

  //4根据调用返回结果导向不同页面

 }

 private void btnbackactionperformed(java.awt.event.actionevent evt) {
  back();
 }

 private void back() {
  mainframe.setcontentpane(new listpanel(mainframe));
  mainframe.validate();
 }

 //gen-begin:variables
 // variables declaration - do not modify
 private javax.swing.jbutton btnback;
 private javax.swing.jbutton btndelete;
 private javax.swing.jlabel jlabel1;
 private javax.swing.jlabel jlabel2;
 private javax.swing.jlabel jlabel3;
 private javax.swing.jlabel jlabel4;
 private javax.swing.jlabel jlabel5;
 private javax.swing.jtextfield tfdname;
 private javax.swing.jtextfield tfdpwd;
 private javax.swing.jtextfield tfdtype;
 private javax.swing.jtextfield tfduuid;
 // end of variables declaration//gen-end:variables

}

cn.hncu.bookstore.user.ui;

updatepanel类：（修改用户模块）

/*
 * updatepanel.java
 *
 * created on __date__, __time__
 */

package cn.hncu.bookstore.user.ui;

import javax.swing.jframe;
import javax.swing.joptionpane;

import cn.hncu.bookstore.common.usertypeenum;
import cn.hncu.bookstore.user.business.ebi.userebi;
import cn.hncu.bookstore.user.business.factory.userebifactory;
import cn.hncu.bookstore.user.vo.usermodel;

/**
 * 
 * @author 陈浩翔
 *
 * @version 1.0
 */
public class updatepanel extends javax.swing.jpanel {
 private jframe mainframe = null;
 private string uuid = null;

 /**
  * creates new form updatepanel
  * 
  * @param uuid
  * @param mainframe
  */
 public updatepanel(jframe mainframe, string uuid) {
  this.mainframe = mainframe;
  this.uuid = uuid;
  initcomponents();
  myinitdata();
 }

 private void myinitdata() {
  userebi ebi = userebifactory.getuserebi();
  usermodel user = ebi.getsingle(uuid);
  tfduuid.settext(user.getuuid());
  tfduuid.seteditable(false);

  tfdname.settext(user.getname());
  tfdpwd.settext(user.getpwd());
  tfdpwd2.settext(user.getpwd());

  combtype.removeallitems();
  string usert = usertypeenum.getnamebytype(user.gettype());
  combtype.additem(usert);
  for (usertypeenum usertype : usertypeenum.values()) {
   if (!usertype.getname().equals(usert)) {
    combtype.additem(usertype.getname());
   }
  }

 }

 // gen-begin:initcomponents
 // <editor-fold defaultstate="collapsed" desc="generated code">
 private void initcomponents() {

  jlabel1 = new javax.swing.jlabel();
  jlabel2 = new javax.swing.jlabel();
  tfdname = new javax.swing.jtextfield();
  jlabel3 = new javax.swing.jlabel();
  tfduuid = new javax.swing.jtextfield();
  jlabel4 = new javax.swing.jlabel();
  tfdpwd2 = new javax.swing.jpasswordfield();
  jlabel5 = new javax.swing.jlabel();
  jlabel6 = new javax.swing.jlabel();
  tfdpwd = new javax.swing.jpasswordfield();
  combtype = new javax.swing.jcombobox();
  btnback = new javax.swing.jbutton();
  btnupdate = new javax.swing.jbutton();

  setminimumsize(new java.awt.dimension(800, 600));
  setlayout(null);

  jlabel1.setfont(new java.awt.font("微软雅黑", 1, 48));
  jlabel1.setforeground(new java.awt.color(204, 0, 0));
  jlabel1.settext("\u4fee\u6539\u7528\u6237");
  add(jlabel1);
  jlabel1.setbounds(320, 30, 230, 80);

  jlabel2.setfont(new java.awt.font("微软雅黑", 0, 18));
  jlabel2.settext("\u7528\u6237\u7c7b\u578b:");
  add(jlabel2);
  jlabel2.setbounds(90, 310, 90, 30);

  tfdname.setfont(new java.awt.font("dialog", 1, 18));
  tfdname.setautoscrolls(false);
  add(tfdname);
  tfdname.setbounds(470, 160, 120, 30);

  jlabel3.setfont(new java.awt.font("微软雅黑", 0, 18));
  jlabel3.settext("uuid:");
  add(jlabel3);
  jlabel3.setbounds(120, 160, 50, 30);

  tfduuid.setfont(new java.awt.font("dialog", 1, 12));
  add(tfduuid);
  tfduuid.setbounds(190, 160, 110, 30);

  jlabel4.setfont(new java.awt.font("微软雅黑", 0, 18));
  jlabel4.settext("\u59d3\u540d:");
  add(jlabel4);
  jlabel4.setbounds(410, 160, 50, 30);

  tfdpwd2.setfont(new java.awt.font("dialog", 1, 18));
  add(tfdpwd2);
  tfdpwd2.setbounds(470, 240, 170, 30);

  jlabel5.setfont(new java.awt.font("微软雅黑", 0, 18));
  jlabel5.settext("\u5bc6\u7801:");
  add(jlabel5);
  jlabel5.setbounds(120, 240, 50, 30);

  jlabel6.setfont(new java.awt.font("微软雅黑", 0, 18));
  jlabel6.settext("\u786e\u8ba4\u5bc6\u7801:");
  add(jlabel6);
  jlabel6.setbounds(380, 240, 90, 30);

  tfdpwd.setfont(new java.awt.font("宋体", 1, 18));
  add(tfdpwd);
  tfdpwd.setbounds(190, 240, 160, 30);

  combtype.setfont(new java.awt.font("dialog", 1, 12));
  combtype.setforeground(new java.awt.color(51, 0, 255));
  combtype.setmodel(new javax.swing.defaultcomboboxmodel(
    new string[] { "" }));
  add(combtype);
  combtype.setbounds(190, 310, 170, 30);

  btnback.setfont(new java.awt.font("dialog", 1, 24));
  btnback.setforeground(new java.awt.color(0, 204, 204));
  btnback.settext("\u8fd4\u56de");
  btnback.addactionlistener(new java.awt.event.actionlistener() {
   public void actionperformed(java.awt.event.actionevent evt) {
    btnbackactionperformed(evt);
   }
  });
  add(btnback);
  btnback.setbounds(500, 430, 120, 60);

  btnupdate.setfont(new java.awt.font("dialog", 1, 24));
  btnupdate.setforeground(new java.awt.color(0, 204, 204));
  btnupdate.settext("\u4fee\u6539");
  btnupdate.addactionlistener(new java.awt.event.actionlistener() {
   public void actionperformed(java.awt.event.actionevent evt) {
    btnupdateactionperformed(evt);
   }
  });
  add(btnupdate);
  btnupdate.setbounds(170, 430, 120, 60);
 }// </editor-fold>
  // gen-end:initcomponents

 private void btnupdateactionperformed(java.awt.event.actionevent evt) {
  // 1收集参数
  string uuid = tfduuid.gettext();
  string name = tfdname.gettext();
  string pwd = new string(tfdpwd.getpassword());
  string pwd2 = new string(tfdpwd2.getpassword());

  if (uuid.equals("") || uuid.equals(null)) {
   joptionpane.showmessagedialog(mainframe, "用户id为空，请重新输入！");
   return;
  }

  if (name.equals("") || name.equals(null)) {
   joptionpane.showmessagedialog(mainframe, "用户名为空，请重新输入！");
   return;
  }

  if (!pwd.equals(pwd2) || pwd.equals("") || pwd.equals(null)
    || pwd2.equals("") || pwd2.equals(null)) {
   joptionpane.showmessagedialog(mainframe, "两次密码输入不一致或密码为空，请重新输入！");
   return;
  }
  int type = 0;

  try {
   type = usertypeenum.gettypebyname(combtype.getselecteditem()
     .tostring());
  } catch (exception e) {
   joptionpane.showmessagedialog(mainframe, "请指定用户类型!");
   return;
  }

  // 2组织参数
  usermodel user = new usermodel();
  user.setname(name);
  user.setpwd(pwd);
  user.settype(type);
  user.setuuid(uuid);

  // 3调用逻辑层
  userebi ebi = userebifactory.getuserebi();

  // 4根据调用返回结果导向不同页面
  if (ebi.update(user)) {
   back();
  } else {
   joptionpane.showmessagedialog(null, "该用户已经不存在!");
  }

 }

 private void btnbackactionperformed(java.awt.event.actionevent evt) {
  back();
 }

 private void back() {
  mainframe.setcontentpane(new listpanel(mainframe));
  mainframe.validate();
 }

 // gen-begin:variables
 // variables declaration - do not modify
 private javax.swing.jbutton btnback;
 private javax.swing.jbutton btnupdate;
 private javax.swing.jcombobox combtype;
 private javax.swing.jlabel jlabel1;
 private javax.swing.jlabel jlabel2;
 private javax.swing.jlabel jlabel3;
 private javax.swing.jlabel jlabel4;
 private javax.swing.jlabel jlabel5;
 private javax.swing.jlabel jlabel6;
 private javax.swing.jtextfield tfdname;
 private javax.swing.jpasswordfield tfdpwd;
 private javax.swing.jpasswordfield tfdpwd2;
 private javax.swing.jtextfield tfduuid;
 // end of variables declaration//gen-end:variables

}

cn.hncu.bookstore.user.ui;

listpanel类（调用用户功能模块）

/*
 * listpanel.java
 *
 * created on __date__, __time__
 */

package cn.hncu.bookstore.user.ui;

import java.util.list;

import javax.swing.jframe;
import javax.swing.joptionpane;

import cn.hncu.bookstore.user.business.ebi.userebi;
import cn.hncu.bookstore.user.business.factory.userebifactory;
import cn.hncu.bookstore.user.vo.usermodel;

/**
 * 表现层-用户列表面板
 * 
 * @author 陈浩翔
 * @version 1.0
 */
public class listpanel extends javax.swing.jpanel {
 private jframe mainframe = null;

 /** creates new form listpanel */
 public listpanel(jframe mainframe) {
  this.mainframe = mainframe;
  initcomponents();
  myinitdata();
 }

 /**
  * 读取所有用户并添加进列表
  */
 private void myinitdata() {
  userebi user = userebifactory.getuserebi();
  list<usermodel> list = user.getall();
  userlists.setlistdata(list.toarray());
 }

 //gen-begin:initcomponents
 // <editor-fold defaultstate="collapsed" desc="generated code">
 private void initcomponents() {

  jscrollpane1 = new javax.swing.jscrollpane();
  userlists = new javax.swing.jlist();
  jlabel1 = new javax.swing.jlabel();
  btntoadd = new javax.swing.jbutton();
  btntodelete = new javax.swing.jbutton();
  btntoupdate = new javax.swing.jbutton();

  setminimumsize(new java.awt.dimension(800, 600));
  setlayout(null);

  userlists.setmodel(new javax.swing.abstractlistmodel() {
   string[] strings = { "" };

   public int getsize() {
    return strings.length;
   }

   public object getelementat(int i) {
    return strings[i];
   }
  });
  jscrollpane1.setviewportview(userlists);

  add(jscrollpane1);
  jscrollpane1.setbounds(170, 80, 480, 230);

  jlabel1.setfont(new java.awt.font("tahoma", 1, 48));
  jlabel1.setforeground(new java.awt.color(204, 0, 51));
  jlabel1.settext("user list");
  add(jlabel1);
  jlabel1.setbounds(300, 0, 260, 80);

  btntoadd.setfont(new java.awt.font("dialog", 1, 24));
  btntoadd.setforeground(new java.awt.color(0, 102, 102));
  btntoadd.settext("\u6dfb\u52a0\u7528\u6237");
  btntoadd.addactionlistener(new java.awt.event.actionlistener() {
   public void actionperformed(java.awt.event.actionevent evt) {
    btntoaddactionperformed(evt);
   }
  });
  add(btntoadd);
  btntoadd.setbounds(160, 350, 150, 50);

  btntodelete.setfont(new java.awt.font("dialog", 1, 24));
  btntodelete.setforeground(new java.awt.color(0, 102, 102));
  btntodelete.settext("\u5220\u9664\u7528\u6237");
  btntodelete.addactionlistener(new java.awt.event.actionlistener() {
   public void actionperformed(java.awt.event.actionevent evt) {
    btntodeleteactionperformed(evt);
   }
  });
  add(btntodelete);
  btntodelete.setbounds(510, 350, 150, 50);

  btntoupdate.setfont(new java.awt.font("dialog", 1, 24));
  btntoupdate.setforeground(new java.awt.color(0, 102, 102));
  btntoupdate.settext("\u4fee\u6539\u7528\u6237");
  btntoupdate.addactionlistener(new java.awt.event.actionlistener() {
   public void actionperformed(java.awt.event.actionevent evt) {
    btntoupdateactionperformed(evt);
   }
  });
  add(btntoupdate);
  btntoupdate.setbounds(160, 450, 150, 50);
 }// </editor-fold>
 //gen-end:initcomponents

 private void btntoupdateactionperformed(java.awt.event.actionevent evt) {
  usermodel user = (usermodel) userlists.getselectedvalue();

  if (user == null) {
   joptionpane.showmessagedialog(mainframe, "请选择要修改的用户!");
   return;
  }

  string uuid = user.getuuid();

  mainframe.setcontentpane(new updatepanel(mainframe, uuid));
  mainframe.validate();
 }

 private void btntodeleteactionperformed(java.awt.event.actionevent evt) {
  usermodel user = (usermodel) userlists.getselectedvalue();

  if (user == null) {
   joptionpane.showmessagedialog(mainframe, "请选择要删除的用户!");
   return;
  }

  string uuid = user.getuuid();

  mainframe.setcontentpane(new deletepanel(mainframe, uuid));
  mainframe.validate();
 }

 private void btntoaddactionperformed(java.awt.event.actionevent evt) {
  mainframe.setcontentpane(new addpanel(mainframe));
  mainframe.validate();
 }

 //gen-begin:variables
 // variables declaration - do not modify
 private javax.swing.jbutton btntoadd;
 private javax.swing.jbutton btntodelete;
 private javax.swing.jbutton btntoupdate;
 private javax.swing.jlabel jlabel1;
 private javax.swing.jscrollpane jscrollpane1;
 private javax.swing.jlist userlists;
 // end of variables declaration//gen-end:variables

}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。