我正在开发一个项目经理-网络应用程序,该应用程序允许您以成员身份登录并加入各种项目。成员可以参与多个项目。项目和成员实体通过成员实体连接。每次登录的成员加入项目时,都会创建一个新的成员实体。
但是,在成员单击joinProject.html -page上的“加入”按钮之后,我无法创建新成员。我不断收到以下错误消息:
(type=Bad Request, status=400).
Failed to convert value of type 'java.lang.String' to required type 'java.lang.Long'; nested exception is java.lang.NumberFormatException: For input string: "saveMembership"
目标是将登录成员添加到项目中。可以在projectDetails.html -page上看到新的成员资格。
我正在使用Spring Boot,Thymeleaf和JPA。我觉得这确实很简单而且很愚蠢,但我只是找不到问题。 :(
如果您需要查看更多代码或信息,我们将很乐意提供。
谢谢您的时间!
这里是MembershipCreatorObject类,我尝试使用该类将所需的数据获取到我的控制器中:
public class MembershipCreatorObject {
private String id;
private String username;
private String jobDescription;
public MembershipCreatorObject() {
super();
}
public MembershipCreatorObject(String id, String username, String jobDescription) {
super();
this.id = id;
this.username = username;
this.jobDescription = jobDescription;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getJobDescription() {
return jobDescription;
}
public void setJobDescription(String jobDescription) {
this.jobDescription = jobDescription;
}
这是我的控制人:
@RequestMapping(value= {"/joinProject/{projectId}"})
public String joinProject(@PathVariable("projectId") Long urlId, Model model) {
model.addAttribute("mObject", new MembershipCreatorObject());
model.addAttribute("project", projectRepo.findByProjectId(urlId));
return "joinProject";
}
@RequestMapping(value="/saveMembership", method=RequestMethod.POST)
public String saveMembership(MembershipCreatorObject mObject) {
String id = mObject.getId();
Long idConverted = Long.parseLong(id);
String username = mObject.getUsername();
String description = mObject.getJobDescription();
Project projectToAdd = projectRepo.findByProjectId(idConverted);
Member memberToAdd = memberRepo.findByUsername(username);
Membership membershipToAdd = new Membership(description, memberToAdd, projectToAdd);
membershipRepo.save(membershipToAdd);
return "redirect:/projectCatalog";
}
这是joinProject -html文件。
<h1>Join Project</h1>
<h4 th:inline="text">Logged in as: [[${#httpServletRequest.remoteUser}]]</h4>
<form th:object="${mObject}" th:action="@{saveMembership}" action="#" style="padding: 20px;" method="POST">
<input th:field="*{id}" />
<!-- th:value="${project.projectId}" -->
<input type="text" th:field="*{username}" />
<!-- th:value="${#httpServletRequest.remoteUser}" -->
<label>What will you be working on?</label>
<input type="text" th:field="*{jobDescription}" style="display: block;" />
<input type="submit" value="Join" style="display: block; margin-top:10px; width:70px;">
</form>
答案 0 :(得分:0)
您似乎正在尝试将文字字符串“ saveMembership”转换为long,而不是将long的字符串表示形式转换为:
String str = "12323445664546544564974";
Long lng = Long.parseLong(str);
这是我基于异常stacktrace的假设,该异常声明为“ NumberFormatException:对于输入字符串:“ saveMembership””
答案 1 :(得分:0)
我不是html或百里香专家,但我认为您在html中输入了错误的内容。
我相信当您在POST
上碰碰时,您的代码会向/joinProject/saveMembership
而不是/saveMembership
发送一个[1554334020000, 1554334200000, 1554334380000, 1554334560000, 1554334740000]
请求。您可以在浏览器中轻松进行测试(检查POST请求的网址是什么)