# 后台手册
# 分页实现
- 前端基于
element
封装的分页组件 pagination (opens new window) - 后端基于
mybatis
的轻量级分页插件pageHelper (opens new window)
# 前端调用实现
1、前端定义分页流程
// 一般在查询参数中定义分页变量
queryParams: {
pageNum: 1,
pageSize: 10
},
// 页面添加分页组件,传入分页变量
<pagination
v-show="total>0"
:total="total"
:page.sync="queryParams.pageNum"
:limit.sync="queryParams.pageSize"
@pagination="getList"
/>
// 调用后台方法,传入参数 获取结果
listUser(this.queryParams).then(response => {
this.userList = response.rows;
this.total = response.total;
}
);
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# 后台逻辑实现
# 导入导出
在实际开发中经常需要使用导入导出功能来加快数据的操作。在项目中可以使用注解来完成此项功能。
在需要被导入导出的实体类属性添加@Excel
注解,目前支持参数如下:
参数 | 类型 | 默认值 | 描述 |
---|---|---|---|
sort | int | Integer.MAX_VALUE | 导出时在excel中排序 |
name | String | 空 | 导出到Excel中的名字 |
dateFormat | String | 空 | 日期格式, 如: yyyy-MM-dd |
dictType | String | 空 | 如果是字典类型,请设置字典的type值 (如: sys_user_sex) |
readConverterExp | String | 空 | 读取内容转表达式 (如: 0=男,1=女,2=未知) |
separator | String | , | 分隔符,读取字符串组内容 |
scale | int | -1 | BigDecimal 精度 默认:-1(默认不开启BigDecimal格式化) |
roundingMode | int | BigDecimal.ROUND_HALF_EVEN | BigDecimal 舍入规则 默认:BigDecimal.ROUND_HALF_EVEN |
columnType | Enum | Type.STRING | 导出类型(0数字 1字符串 2图片) |
height | String | 14 | 导出时在excel中每个列的高度 单位为字符 |
width | String | 16 | 导出时在excel中每个列的宽 单位为字符 |
suffix | String | 空 | 文字后缀,如% 90 变成90% |
defaultValue | String | 空 | 当值为空时,字段的默认值 |
prompt | String | 空 | 提示信息 |
combo | String | Null | 设置只能选择不能输入的列内容 |
targetAttr | String | 空 | 另一个类中的属性名称,支持多级获取,以小数点隔开 |
isStatistics | boolean | false | 是否自动统计数据,在最后追加一行统计数据总和 |
type | Enum | Type.ALL | 字段类型(0:导出导入;1:仅导出;2:仅导入) |
# 导出实现流程
1、前端调用方法(参考如下)
// 查询参数 queryParams
queryParams: {
pageNum: 1,
pageSize: 10,
userName: undefined
},
// 导出接口exportUser
import { exportUser } from "@/api/system/user";
/** 导出按钮操作 */
handleExport() {
const queryParams = this.queryParams;
this.$confirm('是否确认导出所有用户数据项?', "警告", {
confirmButtonText: "确定",
cancelButtonText: "取消",
type: "warning"
}).then(function() {
return exportConfig(queryParams);
}).then(response => {
this.download(response.msg);
}).catch(function() {});
}
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2、添加导出按钮事件
<el-button
type="warning"
icon="el-icon-download"
size="mini"
@click="handleExport"
>导出</el-button>
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3、在实体变量上添加@Excel注解
@Excel(name = "用户序号", prompt = "用户编号")
private Long userId;
@Excel(name = "用户名称")
private String userName;
@Excel(name = "用户性别", readConverterExp = "0=男,1=女,2=未知")
private String sex;
@Excel(name = "最后登陆时间", width = 30, dateFormat = "yyyy-MM-dd HH:mm:ss")
private Date loginDate;
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4、在Controller添加导出方法
@Log(title = "用户管理", businessType = BusinessType.EXPORT)
@PreAuthorize("@ss.hasPermi('system:user:export')")
@GetMapping("/export")
public AjaxResult export(SysUser user)
{
List<SysUser> list = userService.selectUserList(user);
ExcelUtil<SysUser> util = new ExcelUtil<SysUser>(SysUser.class);
return util.exportExcel(list, "用户数据");
}
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# 导入实现流程
1、前端调用方法(参考如下)
// 用户导入参数
upload: {
// 是否显示弹出层(用户导入)
open: false,
// 弹出层标题(用户导入)
title: "",
// 是否禁用上传
isUploading: false,
// 是否更新已经存在的用户数据
updateSupport: 0,
// 设置上传的请求头部
headers: { Authorization: "Bearer " + getToken() },
// 上传的地址
url: process.env.VUE_APP_BASE_API + "/system/user/importData"
},
// 导入模板接口importTemplate
import { importTemplate } from "@/api/system/user";
/** 导入按钮操作 */
handleImport() {
this.upload.title = "用户导入";
this.upload.open = true;
},
/** 下载模板操作 */
importTemplate() {
importTemplate().then(response => {
this.download(response.msg);
});
},
// 文件上传中处理
handleFileUploadProgress(event, file, fileList) {
this.upload.isUploading = true;
},
// 文件上传成功处理
handleFileSuccess(response, file, fileList) {
this.upload.open = false;
this.upload.isUploading = false;
this.$refs.upload.clearFiles();
this.$alert(response.msg, "导入结果", { dangerouslyUseHTMLString: true });
this.getList();
},
// 提交上传文件
submitFileForm() {
this.$refs.upload.submit();
}
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2、添加导入按钮事件
<el-button
type="info"
icon="el-icon-upload2"
size="mini"
@click="handleImport"
>导入</el-button>
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3、添加导入前端代码
<!-- 用户导入对话框 -->
<el-dialog :title="upload.title" :visible.sync="upload.open" width="400px">
<el-upload
ref="upload"
:limit="1"
accept=".xlsx, .xls"
:headers="upload.headers"
:action="upload.url + '?updateSupport=' + upload.updateSupport"
:disabled="upload.isUploading"
:on-progress="handleFileUploadProgress"
:on-success="handleFileSuccess"
:auto-upload="false"
drag
>
<i class="el-icon-upload"></i>
<div class="el-upload__text">
将文件拖到此处,或
<em>点击上传</em>
</div>
<div class="el-upload__tip" slot="tip">
<el-checkbox v-model="upload.updateSupport" />是否更新已经存在的用户数据
<el-link type="info" style="font-size:12px" @click="importTemplate">下载模板</el-link>
</div>
<div class="el-upload__tip" style="color:red" slot="tip">提示:仅允许导入“xls”或“xlsx”格式文件!</div>
</el-upload>
<div slot="footer" class="dialog-footer">
<el-button type="primary" @click="submitFileForm">确 定</el-button>
<el-button @click="upload.open = false">取 消</el-button>
</div>
</el-dialog>
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4、在实体变量上添加@Excel注解,默认为导出导入,也可以单独设置仅导入Type.IMPORT
@Excel(name = "用户序号")
private Long id;
@Excel(name = "部门编号", type = Type.IMPORT)
private Long deptId;
@Excel(name = "用户名称")
private String userName;
/** 导出部门多个对象 */
@Excels({
@Excel(name = "部门名称", targetAttr = "deptName", type = Type.EXPORT),
@Excel(name = "部门负责人", targetAttr = "leader", type = Type.EXPORT)
})
private SysDept dept;
/** 导出部门单个对象 */
@Excel(name = "部门名称", targetAttr = "deptName", type = Type.EXPORT)
private SysDept dept;
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5、在Controller添加导入方法,updateSupport属性为是否存在则覆盖(可选)
@Log(title = "用户管理", businessType = BusinessType.IMPORT)
@PostMapping("/importData")
public AjaxResult importData(MultipartFile file, boolean updateSupport) throws Exception
{
ExcelUtil<SysUser> util = new ExcelUtil<SysUser>(SysUser.class);
List<SysUser> userList = util.importExcel(file.getInputStream());
LoginUser loginUser = tokenService.getLoginUser(ServletUtils.getRequest());
String operName = loginUser.getUsername();
String message = userService.importUser(userList, updateSupport, operName);
return AjaxResult.success(message);
}
@GetMapping("/importTemplate")
public AjaxResult importTemplate()
{
ExcelUtil<SysUser> util = new ExcelUtil<SysUser>(SysUser.class);
return util.importTemplateExcel("用户数据");
}
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# 上传下载
首先创建一张上传文件的表,例如:
drop table if exists sys_file_info;
create table sys_file_info (
file_id int(11) not null auto_increment comment '文件id',
file_name varchar(50) default '' comment '文件名称',
file_path varchar(255) default '' comment '文件路径',
primary key (file_id)
) engine=innodb auto_increment=1 default charset=utf8 comment = '文件信息表';
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# 上传实现流程
1、el-input
修改成el-upload
<el-upload
ref="upload"
:limit="1"
accept=".jpg, .png"
:action="upload.url"
:headers="upload.headers"
:file-list="upload.fileList"
:on-progress="handleFileUploadProgress"
:on-success="handleFileSuccess"
:auto-upload="false">
<el-button slot="trigger" size="small" type="primary">选取文件</el-button>
<el-button style="margin-left: 10px;" size="small" type="success" :loading="upload.isUploading" @click="submitUpload">上传到服务器</el-button>
<div slot="tip" class="el-upload__tip">只能上传jpg/png文件,且不超过500kb</div>
</el-upload>
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2、引入获取token
import { getToken } from "@/utils/auth";
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3、data
中添加属性
// 上传参数
upload: {
// 是否禁用上传
isUploading: false,
// 设置上传的请求头部
headers: { Authorization: "Bearer " + getToken() },
// 上传的地址
url: process.env.VUE_APP_BASE_API + "/common/upload",
// 上传的文件列表
fileList: []
},
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4、新增和修改操作对应处理fileList
参数
handleAdd() {
...
this.upload.fileList = [];
}
handleUpdate(row) {
...
this.upload.fileList = [{ name: this.form.fileName, url: this.form.filePath }];
}
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5、添加对应事件
// 文件提交处理
submitUpload() {
this.$refs.upload.submit();
},
// 文件上传中处理
handleFileUploadProgress(event, file, fileList) {
this.upload.isUploading = true;
},
// 文件上传成功处理
handleFileSuccess(response, file, fileList) {
this.upload.isUploading = false;
this.form.filePath = response.url;
this.msgSuccess(response.msg);
}
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# 下载实现流程
1、添加对应按钮和事件
<el-button
size="mini"
type="text"
icon="el-icon-edit"
@click="handleDownload(scope.row)"
>下载</el-button>
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2、实现文件下载
// 文件下载处理
handleDownload(row) {
var name = row.fileName;
var url = row.filePath;
var suffix = url.substring(url.lastIndexOf("."), url.length);
const a = document.createElement('a')
a.setAttribute('download', name + suffix)
a.setAttribute('target', '_blank')
a.setAttribute('href', url)
a.click()
}
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# 权限注解
- 数据权限示例。
// 符合system:user:list权限要求
@PreAuthorize("@ss.hasPermi('system:user:list')")
// 不符合system:user:list权限要求
@PreAuthorize("@ss.lacksPermi('system:user:list')")
// 符合system:user:add或system:user:edit权限要求即可
@PreAuthorize("@ss.hasAnyPermi('system:user:add,system:user:edit')")
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- 角色权限示例。
// 属于user角色
@PreAuthorize("@ss.hasRole('user')")
// 不属于user角色
@PreAuthorize("@ss.lacksRole('user')")
// 属于user或者admin之一
@PreAuthorize("@ss.hasAnyRoles('user,admin')")
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# 事务管理
# 异常处理
# 参数验证
# 系统日志
# 数据权限
# 多数据源
# 代码生成
# 定时任务
# 系统接口
# 国际化支持
# 后台国际化流程
# 前端国际化流程
1、package.json
中dependencies
节点添加vue-i18n
"vue-i18n": "7.3.2",
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2、src
目录下创建lang目录,存放国际化文件
此处包含三个文件,分别是 index.js
zh.js
en.js
// index.js
import Vue from 'vue'
import VueI18n from 'vue-i18n'
import Cookies from 'js-cookie'
import elementEnLocale from 'element-ui/lib/locale/lang/en' // element-ui lang
import elementZhLocale from 'element-ui/lib/locale/lang/zh-CN'// element-ui lang
import enLocale from './en'
import zhLocale from './zh'
Vue.use(VueI18n)
const messages = {
en: {
...enLocale,
...elementEnLocale
},
zh: {
...zhLocale,
...elementZhLocale
}
}
const i18n = new VueI18n({
// 设置语言 选项 en | zh
locale: Cookies.get('language') || 'en',
// 设置文本内容
messages
})
export default i18n
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// zh.js
export default {
login: {
title: '若依后台管理系统',
logIn: '登录',
username: '账号',
password: '密码'
},
tagsView: {
refresh: '刷新',
close: '关闭',
closeOthers: '关闭其它',
closeAll: '关闭所有'
},
settings: {
title: '系统布局配置',
theme: '主题色',
tagsView: '开启 Tags-View',
fixedHeader: '固定 Header',
sidebarLogo: '侧边栏 Logo'
}
}
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// en.js
export default {
login: {
title: 'RuoYi Login Form',
logIn: 'Log in',
username: 'Username',
password: 'Password'
},
tagsView: {
refresh: 'Refresh',
close: 'Close',
closeOthers: 'Close Others',
closeAll: 'Close All'
},
settings: {
title: 'Page style setting',
theme: 'Theme Color',
tagsView: 'Open Tags-View',
fixedHeader: 'Fixed Header',
sidebarLogo: 'Sidebar Logo'
}
}
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3、在src/main.js
中增量添加i18n
import i18n from './lang'
// use添加i18n
Vue.use(Element, {
i18n: (key, value) => i18n.t(key, value)
})
new Vue({
i18n,
})
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4、在src/store/getters.js
中添加language
language: state => state.app.language,
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5、在src/store/modules/app.js
中增量添加i18n
const state = {
language: Cookies.get('language') || 'en'
}
const mutations = {
SET_LANGUAGE: (state, language) => {
state.language = language
Cookies.set('language', language)
}
}
const actions = {
setLanguage({ commit }, language) {
commit('SET_LANGUAGE', language)
}
}
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6、在src/components/LangSelect/index.vue
中创建汉化组件
<template>
<el-dropdown trigger="click" class="international" @command="handleSetLanguage">
<div>
<svg-icon class-name="international-icon" icon-class="language" />
</div>
<el-dropdown-menu slot="dropdown">
<el-dropdown-item :disabled="language==='zh'" command="zh">
中文
</el-dropdown-item>
<el-dropdown-item :disabled="language==='en'" command="en">
English
</el-dropdown-item>
</el-dropdown-menu>
</el-dropdown>
</template>
<script>
export default {
computed: {
language() {
return this.$store.getters.language
}
},
methods: {
handleSetLanguage(lang) {
this.$i18n.locale = lang
this.$store.dispatch('app/setLanguage', lang)
this.$message({
message: '设置语言成功',
type: 'success'
})
}
}
}
</script>
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7、登录页面汉化
<template>
<div class="login">
<el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form">
<h3 class="title">{{ $t('login.title') }}</h3>
<lang-select class="set-language" />
<el-form-item prop="username">
<el-input v-model="loginForm.username" type="text" auto-complete="off" :placeholder="$t('login.username')">
<svg-icon slot="prefix" icon-class="user" class="el-input__icon input-icon" />
</el-input>
</el-form-item>
<el-form-item prop="password">
<el-input
v-model="loginForm.password"
type="password"
auto-complete="off"
:placeholder="$t('login.password')"
@keyup.enter.native="handleLogin"
>
<svg-icon slot="prefix" icon-class="password" class="el-input__icon input-icon" />
</el-input>
</el-form-item>
<el-form-item prop="code">
<el-input
v-model="loginForm.code"
auto-complete="off"
placeholder="验证码"
style="width: 63%"
@keyup.enter.native="handleLogin"
>
<svg-icon slot="prefix" icon-class="validCode" class="el-input__icon input-icon" />
</el-input>
<div class="login-code">
<img :src="codeUrl" @click="getCode" />
</div>
</el-form-item>
<el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
<el-form-item style="width:100%;">
<el-button
:loading="loading"
size="medium"
type="primary"
style="width:100%;"
@click.native.prevent="handleLogin"
>
<span v-if="!loading">{{ $t('login.logIn') }}</span>
<span v-else>登 录 中...</span>
</el-button>
</el-form-item>
</el-form>
<!-- 底部 -->
<div class="el-login-footer">
<span>Copyright © 2018-2019 ruoyi.vip All Rights Reserved.</span>
</div>
</div>
</template>
<script>
import LangSelect from '@/components/LangSelect'
import { getCodeImg } from "@/api/login";
import Cookies from "js-cookie";
import { encrypt, decrypt } from '@/utils/jsencrypt'
export default {
name: "Login",
components: { LangSelect },
data() {
return {
codeUrl: "",
cookiePassword: "",
loginForm: {
username: "admin",
password: "admin123",
rememberMe: false,
code: "",
uuid: ""
},
loginRules: {
username: [
{ required: true, trigger: "blur", message: "用户名不能为空" }
],
password: [
{ required: true, trigger: "blur", message: "密码不能为空" }
],
code: [{ required: true, trigger: "change", message: "验证码不能为空" }]
},
loading: false,
redirect: undefined
};
},
watch: {
$route: {
handler: function(route) {
this.redirect = route.query && route.query.redirect;
},
immediate: true
}
},
created() {
this.getCode();
this.getCookie();
},
methods: {
getCode() {
getCodeImg().then(res => {
this.codeUrl = "data:image/gif;base64," + res.img;
this.loginForm.uuid = res.uuid;
});
},
getCookie() {
const username = Cookies.get("username");
const password = Cookies.get("password");
const rememberMe = Cookies.get('rememberMe')
this.loginForm = {
username: username === undefined ? this.loginForm.username : username,
password: password === undefined ? this.loginForm.password : decrypt(password),
rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
};
},
handleLogin() {
this.$refs.loginForm.validate(valid => {
if (valid) {
this.loading = true;
if (this.loginForm.rememberMe) {
Cookies.set("username", this.loginForm.username, { expires: 30 });
Cookies.set("password", encrypt(this.loginForm.password), { expires: 30 });
Cookies.set('rememberMe', this.loginForm.rememberMe, { expires: 30 });
} else {
Cookies.remove("username");
Cookies.remove("password");
Cookies.remove('rememberMe');
}
this.$store
.dispatch("Login", this.loginForm)
.then(() => {
this.loading = false;
this.$router.push({ path: this.redirect || "/" });
})
.catch(() => {
this.loading = false;
this.getCode();
});
}
});
}
}
};
</script>
<style rel="stylesheet/scss" lang="scss">
.login {
display: flex;
justify-content: center;
align-items: center;
height: 100%;
background-image: url("../assets/image/login-background.jpg");
background-size: cover;
}
.title {
margin: 0px auto 30px auto;
text-align: center;
color: #707070;
}
.login-form {
border-radius: 6px;
background: #ffffff;
width: 400px;
padding: 25px 25px 5px 25px;
.el-input {
height: 38px;
input {
height: 38px;
}
}
.input-icon {
height: 39px;
width: 14px;
margin-left: 2px;
}
}
.login-tip {
font-size: 13px;
text-align: center;
color: #bfbfbf;
}
.login-code {
width: 33%;
height: 38px;
float: right;
img {
cursor: pointer;
vertical-align: middle;
}
}
.el-login-footer {
height: 40px;
line-height: 40px;
position: fixed;
bottom: 0;
width: 100%;
text-align: center;
color: #fff;
font-family: Arial;
font-size: 12px;
letter-spacing: 1px;
}
</style>
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普通文本使用方式: {{ $t('login.title') }}
标签内使用方式: :placeholder="$t('login.password')"
js内使用方式 this.$t('login.user.password.not.match')
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