外贸营销网站建设工程,免费网站域名使用,东莞普工招聘最新招聘信息,wordpress进不去数据库jQueryEasyUI详解
jQuery EasyUI是一组基于jQuery的UI插件集合体#xff0c;而jQuery EasyUI的目标就是帮助web开发者更轻松的打造出功能丰富并且美观的UI界面。
开发者不需要编写复杂的javascript#xff0c;也不需要对css样式有深入的了解#xff0c;开发者需要了解的只…jQueryEasyUI详解
jQuery EasyUI是一组基于jQuery的UI插件集合体而jQuery EasyUI的目标就是帮助web开发者更轻松的打造出功能丰富并且美观的UI界面。
开发者不需要编写复杂的javascript也不需要对css样式有深入的了解开发者需要了解的只有一些简单的html标签。
如何使用EasyUI插件 datagrid向用户展示列表数据。dialog创建或编辑一条单一的用户信息。form用于提交表单数据。messager显示一些操作信息。对user表进行CRUD分页简单查询
列表 新增
修改 项目图片 初始化类InitApplicationListener
在启动服务器的时候插入默认已知数据
package com.jege.spring.boot.controller;import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationListener;
import org.springframework.context.event.ContextRefreshedEvent;
import org.springframework.stereotype.Component;import com.jege.spring.boot.data.jpa.entity.User;
import com.jege.spring.boot.data.jpa.repository.UserRepository;/*** spring的事件监听器的处理机制在启动服务器的时候插入默认数据*/
Component
public class InitApplicationListener implements ApplicationListenerContextRefreshedEvent {Overridepublic void onApplicationEvent(ContextRefreshedEvent event) {ApplicationContext context event.getApplicationContext();UserRepository userRepository context.getBean(userRepository, UserRepository.class);for (int i 1; i 21; i) {User user new User(user i, 25 i);userRepository.save(user);}}}
全局异常处理CommonExceptionAdvice
package com.jege.spring.boot.exception;import java.util.Set;import javax.validation.ConstraintViolation;
import javax.validation.ConstraintViolationException;
import javax.validation.ValidationException;import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.dao.DataIntegrityViolationException;
import org.springframework.http.HttpStatus;
import org.springframework.http.converter.HttpMessageNotReadableException;
import org.springframework.validation.BindException;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.HttpMediaTypeNotSupportedException;
import org.springframework.web.HttpRequestMethodNotSupportedException;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.MissingServletRequestParameterException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.ResponseStatus;import com.jege.spring.boot.json.AjaxResult;/*** 全局异常处理*/
ControllerAdvice
ResponseBody
public class CommonExceptionAdvice {private static Logger logger LoggerFactory.getLogger(CommonExceptionAdvice.class);/*** 400 - Bad Request*/ResponseStatus(HttpStatus.BAD_REQUEST)ExceptionHandler(MissingServletRequestParameterException.class)public AjaxResult handleMissingServletRequestParameterException(MissingServletRequestParameterException e) {logger.error(缺少请求参数, e);return new AjaxResult().failure(required_parameter_is_not_present);}/*** 400 - Bad Request*/ResponseStatus(HttpStatus.BAD_REQUEST)ExceptionHandler(HttpMessageNotReadableException.class)public AjaxResult handleHttpMessageNotReadableException(HttpMessageNotReadableException e) {logger.error(参数解析失败, e);return new AjaxResult().failure(could_not_read_json);}/*** 400 - Bad Request*/ResponseStatus(HttpStatus.BAD_REQUEST)ExceptionHandler(MethodArgumentNotValidException.class)public AjaxResult handleMethodArgumentNotValidException(MethodArgumentNotValidException e) {logger.error(参数验证失败, e);BindingResult result e.getBindingResult();FieldError error result.getFieldError();String field error.getField();String code error.getDefaultMessage();String message String.format(%s:%s, field, code);return new AjaxResult().failure(message);}/*** 400 - Bad Request*/ResponseStatus(HttpStatus.BAD_REQUEST)ExceptionHandler(BindException.class)public AjaxResult handleBindException(BindException e) {logger.error(参数绑定失败, e);BindingResult result e.getBindingResult();FieldError error result.getFieldError();String field error.getField();String code error.getDefaultMessage();String message String.format(%s:%s, field, code);return new AjaxResult().failure(message);}/*** 400 - Bad Request*/ResponseStatus(HttpStatus.BAD_REQUEST)ExceptionHandler(ConstraintViolationException.class)public AjaxResult handleServiceException(ConstraintViolationException e) {logger.error(参数验证失败, e);SetConstraintViolation? violations e.getConstraintViolations();ConstraintViolation? violation violations.iterator().next();String message violation.getMessage();return new AjaxResult().failure(parameter: message);}/*** 400 - Bad Request*/ResponseStatus(HttpStatus.BAD_REQUEST)ExceptionHandler(ValidationException.class)public AjaxResult handleValidationException(ValidationException e) {logger.error(参数验证失败, e);return new AjaxResult().failure(validation_exception);}/*** 405 - Method Not Allowed*/ResponseStatus(HttpStatus.METHOD_NOT_ALLOWED)ExceptionHandler(HttpRequestMethodNotSupportedException.class)public AjaxResult handleHttpRequestMethodNotSupportedException(HttpRequestMethodNotSupportedException e) {logger.error(不支持当前请求方法, e);return new AjaxResult().failure(request_method_not_supported);}/*** 415 - Unsupported Media Type*/ResponseStatus(HttpStatus.UNSUPPORTED_MEDIA_TYPE)ExceptionHandler(HttpMediaTypeNotSupportedException.class)public AjaxResult handleHttpMediaTypeNotSupportedException(Exception e) {logger.error(不支持当前媒体类型, e);return new AjaxResult().failure(content_type_not_supported);}/*** 500 - Internal Server Error*/ResponseStatus(HttpStatus.OK)ExceptionHandler(ServiceException.class)public AjaxResult handleServiceException(ServiceException e) {logger.error(业务逻辑异常, e);return new AjaxResult().failure(业务逻辑异常 e.getMessage());}/*** 500 - Internal Server Error*/ResponseStatus(HttpStatus.OK)ExceptionHandler(Exception.class)public AjaxResult handleException(Exception e) {logger.error(通用异常, e);return new AjaxResult().failure(通用异常 e.getMessage());}/*** 操作数据库出现异常:名称重复外键关联*/ResponseStatus(HttpStatus.OK)ExceptionHandler(DataIntegrityViolationException.class)public AjaxResult handleException(DataIntegrityViolationException e) {logger.error(操作数据库出现异常:, e);return new AjaxResult().failure(操作数据库出现异常字段重复、有外键关联等);}
}
user.jsp页面
% page languagejava contentTypetext/html; charsetUTF-8 pageEncodingUTF-8%
!DOCTYPE html PUBLIC -//W3C//DTD HTML 4.01 Transitional//EN http://www.w3.org/TR/html4/loose.dtd
html
head
meta http-equivContent-Type contenttext/html; charsetUTF-8
title用户管理/title
%include file/WEB-INF/page/common.jsp%
script typetext/javascript// 页面加载完毕之后才能写jQuery的代码$(function() {// 声明并缓存easyui组件var userDatagrid $(#userDatagrid);var userDialog $(#userDialog);var userForm $(#userForm);var userSearchForm $(#userSearchForm);// 表单的添加方法userForm.form({url : /user/save,onSubmit : function() {// 在表单提交前做一下验证return userForm.form(validate);},//data是后台save方法返回的json字符串success : function(data) {// 需要自己把字符串转变成json对象easyiui没有提供转换data $.parseJSON(data);// 判断保存是否成功if (data.meta.success) {// 成功就关掉对话框userDialog.dialog(close);//重新加载最新的数据userDatagrid.datagrid(reload);} else {$.messager.alert(错误提示, data.meta.message, error);}}});// 创建操作data-url的json对象把页面所有linkbutton组件的操作都统一添加到此对象上面var urlObjectUser {addUser : function() {// 清空对话框里面的表单内容防止原来的数据有缓存userForm.form(clear);// 打开对话框修改标题然后居中userDialog.dialog(open).dialog(setTitle, 添加用户);},updateUser : function() {// 获取选中行数据var selectedRow userDatagrid.datagrid(getSelected);// 判断是否选中行if (!selectedRow) {$.messager.alert(操作提示, 请先选中一行数据在修改, info);return;}// 清空对话框里面的表单内容userForm.form(clear);//修改的时候才查询上级null数据$(#parentCombotree).combotree({url : ${ctx}/user/getTreeByParent});// 使用easyui的form组件load方法只要是相同的名称会自动回显数据userForm.form(load, selectedRow);// 打开对话框userDialog.dialog(open).dialog(setTitle, 编辑用户);},removeUser : function() {// 获取选中行数据var row userDatagrid.datagrid(getSelected);// 判断是否选中行if (!row) {$.messager.alert(操作提示, 请选中一行数据在删除, info);return;}$.get(/user/delete?id row.id, function(data) {if (data.meta.success) {//删除成功userDatagrid.datagrid(reload);} else {$.messager.alert(错误提示, data.meta.message, error);}}, json);},reloadUser : function() {//调用重新加载数据的方法userDatagrid.datagrid(reload);},saveUser : function() {//提交表单userForm.submit();},cancelUser : function() {//关闭对话框userDialog.dialog(close);},searchUser : function() {//简单搜索userDatagrid.datagrid(load, {q : $(input[nameq]).val()});}};// 对页面所有linkbutton组件统一监听$(a[data-url]).on(click, function() {// 获取linkbutton的data-url信息 var url $(this).data(url);//如果此目标方法是存在的并且linkbutton组件没有被禁用才可以点击if (urlObjectUser[url] !$(this).linkbutton(options).disabled) {//调用动态的方法urlObjectUser[url]();}});});
/script
/head
body!-- 数据表格组件 --table iduserDatagrid classeasyui-datagrid url/user/json title用户管理 fittrue borderfalsefitColumnstrue singleSelecttrue paginationtrue rownumberstrue toolbar#userDatagridToolbartheadtrth data-optionsfield:id编号/thth data-optionsfield:name,width:10名称/thth data-optionsfield:age,width:10年龄/th/tr/thead/table!-- 数据表格组件工具栏 --div classeasyui-layout fittruediv iduserDatagridToolbar regionnorth borderfalsestyleborder-bottom: 1px solid #ddd; height: 32px; padding: 2px 5px; background: #fafafa;div stylefloat: left;a data-urladdUser hrefjavascript:void(0) classeasyui-linkbutton c1 iconClsicon-add添加/a adata-urlupdateUser hrefjavascript:void(0) classeasyui-linkbutton c2 iconClsicon-edit编辑/a adata-urlremoveUser hrefjavascript:void(0) classeasyui-linkbutton c3 iconClsicon-remove删除/aa data-urlreloadUser hrefjavascript:void(0) classeasyui-linkbutton c4 iconClsicon-reload刷新/aa hrefjavascript:void(0) classeasyui-linkbutton c8 iconClsicon-search data-urlsearchUserdisabledtrue不能点击的按钮,点击了也没有事件处理/a/divdiv stylefloat: rightform methodpost关键字input nameq size10 / a data-urlsearchUser hrefjavascript:void(0)classeasyui-linkbutton c5 iconClsicon-search搜索/a/form/div/div/div!-- 添加/编辑用户对话框 --div iduserDialog classeasyui-dialog stylewidth: 360px; height: 260px; padding: 10px 20pxtitle管理用户对话框 data-optionsclosed:true,modal:true,buttons:#userDialogButtons,resizable:trueform iduserForm methodpostinput typehidden nameid /div classftitle用户信息/divtable aligncentertrtd名称:/tdtdinput classeasyui-validatebox requiredtrue typetext namename/input/td/trtrtd年龄:/tdtdinput classeasyui-numberbox requiredtrue min20 max80 precision0 typetextnameage/input/td/tr/table/form/div!-- 对话框按钮组件 --div iduserDialogButtonsa data-urlsaveUser hrefjavascript:void(0) classeasyui-linkbutton c6 iconClsicon-okstylewidth: 90px保存/a a data-urlcancelUser hrefjavascript:void(0) classeasyui-linkbutton c7iconClsicon-cancel stylewidth: 90px取消/a/div
/body
/html扫一扫关注和我共同进步哟
