我已经花了一周时间寻找有关如何将内容服务器到我的网页的指导***两次,因为使用 Model 或 ModelAndView 切断内容一次可以工作,但如果用户再次与页面交互,我希望它加载更多内容同一页。
Java Spring 后端方法 Get 有效 Post 则不行:
@RequestMapping(value = "explorer", method = RequestMethod.GET)
public String redirectExplorer(@RequestParam(value = "param1", required = false) String name, Model model) {
if (name != null) {
ApplicationContext context = new ClassPathXmlApplicationContext("Spring-Module.xml");
OffenderDAO offenderDAO = (OffenderDAO) context.getBean("offenderDAO");
Offender[] offenders = null;
try {
offenders = offenderDAO.requestOffenders(name);
} catch (Exception e) {
e.printStackTrace();
}
((ConfigurableApplicationContext) context).close();
model.addAttribute("offenderlists", offenders);
}
return "explorer";
}
@RequestMapping(value = "explorer", method = RequestMethod.POST)
public String selectionHandler(@RequestParam("offenderid") String text, Model map) {
String offenderID = text.trim();
System.out.println("requested more info for: " + offenderID);
Offender offender = null;
ApplicationContext context = new ClassPathXmlApplicationContext("Spring-Module.xml");
OffenderDAO offenderDAO = (OffenderDAO) context.getBean("offenderDAO");
try {
offender = offenderDAO.findOffenderById(offenderID);
} catch (Exception e) {
e.printStackTrace();
}
((ConfigurableApplicationContext) context).close();
map.addAttribute("selectedOffender", offender);
return "explorer";
}
好的,您可以看到 GET 方法加载了一个用户可以与之交互的列表,并且该列表将向显示的其他方法发送发布响应。问题是,即使收到帖子并且数据存在于响应中(由 println 确认),网页也不会更新。
下面是负责上述模型更改的 JSP 代码。
<ul class="result-class">
<c:forEach var="offender" items="${offenderlists}">
<li><div class="result-div">
<div class="result-img-holder">
<img class="lazy" src=<c:out value="${offender.linkToPicture}"/>
height="120" width="120" /> <span class=result-div-titles>
OffenderID: </span>
<c:out value="${offender.offenderId}" />
</div>
<div class="result-div-oinfo">
<ul class="info-list1">
<li><span class=result-div-titles> First Name: </span> <c:out
value="${offender.firstName}" /></li>
<li><span class=result-div-titles> Last Name: </span> <c:out
value="${offender.lastName}" /></li>
<li><span class=result-div-titles> Middle Name: </span> <c:out
value="${offender.middleName}" /></li>
<li><span class=result-div-titles> DOB: </span> <c:out
value="${offender.DOB}" /></li>
<li><span class=result-div-titles> Sex: </span> <c:out
value="${offender.sex}" /></li>
<li><span class=result-div-titles> Risk Level: </span> <c:out
value="${offender.riskLevel}" /></li>
<li><span class=result-div-titles> Designation: </span> <c:out
value="${offender.designation}" /></li>
</ul>
<ul class="info-list2">
<li><span class=result-div-titles> Race: </span>
<c:out value="${offender.race}" /></li>
<li><span class=result-div-titles> Ethnicity: </span>
<c:out value="${offender.ethnicity}" /></li>
<li><span class=result-div-titles> Hair Color: </span>
<c:out value="${offender.hairColor}" /></li>
<li><span class=result-div-titles> Eye Color: </span>
<c:out value="${offender.eyeColor}" /></li>
<li><span class=result-div-titles> Glasses: </span>
<c:out value="${offender.correctiveLens}" /></li>
</ul>
<div class="result-address">
<span class=result-div-titles> Primary Address: </span><br>
<c:out value="${offender.primaryAddress.address_line1}" />
<br>
<c:out value="${offender.primaryAddress.city}" />
, New York
<c:out value="${offender.primaryAddress.zipcode}" />
</div>
</div>
</div></li>
</c:forEach>
</ul>
<div id="wide-sidebar">
First Name: <c:out value="${selectedOffender.firstName}"/>
<div id="vehicles-sidebar">
<h1>Vehicles Registered:</h1>
<ul>
<c:forEach items="${selectedOffender.currentVehicles}" var="vehicle">
<li>
<span><c:out value="${vehicle.plate}"/></span>
<span style="margin:10px;">something1<c:out value="${vehicle.state}"/></span>
<span style="margin:10px;"><c:out value="${vehicle.color}"/></span>
<span style="margin:10px;"><c:out value="${vehicle.make}"/></span>
<span style="margin:10px;"><c:out value="${vehicle.model}"/></span>
<span style="margin:10px;"><c:out value="${vehicle.year}"/></span></li>
</c:forEach>
</ul>
</div>
问题回顾我有两个列表,它们根据一页上的用户交互彼此分开加载。一个列表会加载,但另一个不会加载。这不是代码,我只是缺少一些东西......没有错误
Goal这里的目标是从数据库加载选项列表,然后用户可以选择加载网页另一半的选项。但请注意,问题在于这些选择可以正常加载,但网页的其余部分则无法加载。如果我首先加载网页的其余部分,它可以工作,但随后列表将不会在请求时加载。