本例介绍控制器和jsp页面的写法，分两部分。
本文中，jsp页面，一共有3个，浏览页面，增加页面，修改页面。
控制器一共有6个。浏览getAuthors，增加页面跳转authorAdd，增加业务authorSave，修改页面跳转authorModify，修改业务authorUpdate，删除业务authorDel。
一、控制器
1，入参。
其中控制器中，需要带id传值的，有2个，一个删除业务，一个是修改页面跳转。这里两个同样需要路径参数注解。
带bean传值的，有3个，一个是增加页面跳转，一个是增加业务，一个是修改业务。
带BindingResult，error返回值的，有2个，一个是增加业务。一个是修改业务。
带Valid校验bean的，也是2个，一个是增加业务。一个是修改业务。
带路径参数注解 @PathVariable的，有2个。一个是删除业务，一个是修改页面跳转。
带请求参数注解 @RequestParam 的，有1个，浏览所有getAuthors。且该请求参数后需要跟着实参。
代码如下：
@Controller
public class ZhouyiAuthorController {
@Autowired
private ZhouyiAuthorService zhouyiAuthorService;
@RequestMapping("/getAuthors")
public ModelAndView getAuhoros(@RequestParam(value="pn",defaultValue = "1")Integer pn) {
PageHelper.startPage(pn, 12);
ModelAndView mv = new ModelAndView("zhouyiAuthor");
List<ZhouyiAuthor> zhouyiContentAuthors = zhouyiAuthorService.getZhouyiContentAuthors();
PageInfo page = new PageInfo(zhouyiContentAuthors,7);
mv.addObject("pageinfo", page);
return mv;
}
@RequestMapping("/zhouyiAuthorDel/{id}")
public ModelAndView zhouyiAuthorDel(@PathVariable("id") Integer id) {
ModelAndView mv = new ModelAndView();
List<ZhouyiAuthor> zhouyiAuthorsFromContents = zhouyiAuthorService.getZhouyiAuthorsFromContents(id);
if(zhouyiAuthorsFromContents.size()>0) {
mv.addObject("errors", "*该作者下有子类目，不允许删除！");
mv.setViewName("forward:/getAuthors");
return mv;
}
int deleteZhouyiContentAuthor = zhouyiAuthorService.deleteZhouyiContentAuthor(id);
if(deleteZhouyiContentAuthor!=1) {
mv.addObject("errors", "*删除异常！");
mv.setViewName("forward:/getAuthors");
return mv;
}
mv.setViewName("redirect:/getAuthors");
return mv;
}
@RequestMapping("/zhouyiAuthorAdd")
public ModelAndView zhouyiAuthorAdd(ZhouyiAuthor zhouyiAuthor){
ModelAndView mv = new ModelAndView("zhouyiAuthorAdd");
return mv;
}
@RequestMapping("/zhouyiAuthorSave")
public ModelAndView zhouyiAuthorSave(@Valid ZhouyiAuthor zhouyiAuthor,BindingResult errors) {
ModelAndView mv = new ModelAndView();
if(errors.getFieldErrorCount()>0) {
for (FieldError err : errors.getFieldErrors()) {
System.out.println("err.field:= "+err.getField()+ " | message:==="+ err.getDefaultMessage());
}
mv.setViewName("zhouyiAuthorAdd");
return mv;
}
zhouyiAuthorService.addZhouyiContentAuthor(zhouyiAuthor);
mv.setViewName("forward:/getAuthors");
return mv;
}
@RequestMapping("/zhouyiAuthorModify/{id}")
public ModelAndView zhouyiAuthorModify(@PathVariable("id") Integer id) {
ModelAndView mv = new ModelAndView("zhouyiAuthorModify");
mv.addObject("zhouyiAuthor",zhouyiAuthorService.getZhouyiContentAuthorById(id) );
return mv;
}
@RequestMapping("/zhouyiAuthorUpdate")
public ModelAndView zhouyiAuthorUpdate(@Valid ZhouyiAuthor zhouyiAuthor,BindingResult errors) {
ModelAndView mv = new ModelAndView();
if(zhouyiAuthor.getOrderId()==null) {
errors.addError(new FieldError("zhouyiAuthor", "orderId", "不能为空"));
}
if(errors.getErrorCount()>0) {
mv.setViewName("zhouyiAuthorModify");
return mv;
}
zhouyiAuthorService.modifyZhouyiContentAuthor(zhouyiAuthor);
mv.setViewName("redirect:/getAuthors");
return mv;
}
}
2.jsp页面。
有3个，如果能用springmvc标签写的，就用springmvc标签写，不要用html普通标签写，因为有一些附件功能，比如path在修改页面时，若有列表可以自动检查当前值并且选中。
头如下：
<title>Yiwiki - 作者</title>
<% pageContext.setAttribute("APP_PATH", request.getContextPath()); %>
<script src="${APP_PATH}/static/js/jquery-1.12.4.min.js"></script>
<link href="${APP_PATH}/static/bootstrap-3.3.7-dist/css/bootstrap-theme.css" rel="stylesheet">
<link href="${APP_PATH}/static/bootstrap-3.3.7-dist/css/bootstrap.css" rel="stylesheet">
<script src="${APP_PATH}/static/bootstrap-3.3.7-dist/js/bootstrap.js" ></script>
</head>
<body>
头文件包括如下：
<body>
<jsp:include page="/header.jsp"></jsp:include>
<ol class="breadcrumb">
<li><a href="#">Home</a></li>
<li><a href="#">作者分类</a></li>
<li class="active">修改</li>
</ol>
//下面为主体部分
<div class="container">
浏览页面如下：
<div class="container">
<span style="margin-left:3px;color:#ce4844;font-weight:bold">${errors }</span>
<a href="${APP_PATH }/zhouyiAuthorAdd"><button type="button" class="btn btn-primary "
style="margin-bottom: 8px; float: right">新增</button></a>
<table class="table table-striped table-hover">
<tr>
<td>ID</td>
<td>排序</td>
<td>作者名称</td>
<td>说明</td>
<td>操作</td>
</tr>
<c:forEach items="${pageinfo.list }" var="zhouyiAuthor">
<tr>
<td>${zhouyiAuthor.id }</td>
<td>${zhouyiAuthor.orderId }</td>
<td>${zhouyiAuthor.name }</td>
<td>${zhouyiAuthor.info }</td>
<td><a href="${APP_PATH }/zhouyiAuthorModify/${zhouyiAuthor.id}"><button type="button" class="btn btn-primary btn-xs btn_edit" edit_id="${zhouyiAuthor.id }">修改</button></a>
<a href="${APP_PATH }/zhouyiAuthorDel/${zhouyiAuthor.id}"><button type="button" class="btn btn-primary btn-xs" onclick="return confirm(‘确定要删除吗？‘)">删除</button></a></td>
</tr>
</c:forEach>
</table>
共${pageinfo.total }条记录,共${pageinfo.pages }页
<nav style="float: right" aria-label="Page navigation">
<ul class="pagination">
<li><a
href="${APP_PATH }/getAuthors?pn=1"
aria-label="Previous"> <span aria-hidden="true">«</span>
</a></li>
<c:forEach items="${pageinfo.navigatepageNums }" var="nums">
<c:if test="${pageinfo.pageNum == nums }">
<li class="active"><a
href="${APP_PATH }/getAuthors?pn=${nums}">${nums }</a></li>
</c:if>
<c:if test="${pageinfo.pageNum != nums }">
<li><a
href="${APP_PATH }/getAuthors?pn=${nums}">${nums }</a></li>
</c:if>
</c:forEach>
<li><a
href="${APP_PATH }/getAuthors?pn=${pageinfo.pages}"
aria-label="Next"> <span aria-hidden="true">»</span>
</a></li>
</ul>
</nav>
</div>
增加跳转页面如下：
<div class="container">
<form:form modelAttribute="zhouyiAuthor" class="form-horizontal" id="saveForm" >
<div class="form-group">
<label for="name" class="col-sm-2 control-label">作者</label>
<div class="col-sm-6">
<form:input type="text" path="name" class="form-control" id="name" placeholder="姓名" /><form:errors path="name"></form:errors>
</div>
</div>
<div class="form-group">
<label for="info" class="col-sm-2 control-label">说明</label>
<div class="col-sm-6">
<form:input type="text" path="info" class="form-control" id="info" placeholder="备注"/><form:errors path="info"></form:errors>
</div>
</div>
<div class="form-group">
<label for="" class="col-sm-2 control-label"></label>
<div class="col-sm-6" >
<button type="submit" id="saveIndex" class="btn btn-primary" formenctype="multipart/form-data" formaction="${APP_PATH }/zhouyiAuthorSave" formmethod="post" >保存</button>
</div>
</div>
</form:form>
</div>
修改页面如下：
<div class="container">
<form:form modelAttribute="zhouyiAuthor" class="form-horizontal" id="saveForm" >
<div class="form-group">
<form:hidden path="id"/>
<label for="name" class="col-sm-2 control-label">作者</label>
<div class="col-sm-6">
<form:input type="text" path="name" class="form-control" id="name" placeholder="姓名" /><form:errors path="name"></form:errors>
</div>
</div>
<div class="form-group">
<label for="info" class="col-sm-2 control-label">说明</label>
<div class="col-sm-6">
<form:input type="text" path="info" class="form-control" id="info" placeholder="备注"/><form:errors path="info"></form:errors>
</div>
</div>
<div class="form-group">
<label for="orderId" class="col-sm-2 control-label">排序</label>
<div class="col-sm-2">
<form:input type="text" path="orderId" class="form-control" id="orderId" placeholder="排序"/><form:errors path="orderId"></form:errors>
</div>
</div>
<div class="form-group">
<label for="" class="col-sm-2 control-label"></label>
<div class="col-sm-6" >
<button type="submit" id="saveIndex" class="btn btn-primary" formenctype="multipart/form-data" formaction="${APP_PATH }/zhouyiAuthorUpdate" formmethod="post" >保存</button>
</div>
</div>
</form:form>
</div>
原文地址：https://www.cnblogs.com/sdgtxuyong/p/12194880.html
时间： 2024-10-05 15:16:32