Question

我正在学习Spring，并且想从表中删除数据时URL映射存在问题。我不知道应该输入什么URL来再次将我重定向到表。从不相关的表中删除它很容易，因为url映射将类似于("/charList")，但是在相关表中，我必须重定向到类似return "notebook/chract/{id}";的映射。但是它将我重定向到ID，该ID已删除，这是错误的。我真的不知道该如何用英语正确解释，因为我不是母语人士。希望你能理解我的问题。下面有一些类：

@Controller
public class TabCharsController {

final private TabRepository tabRepository;
final private TabCharsRepository tabCharsRepository;
final private ElectronicCharsNameRepository electronicCharsNameRepository;
final private ElectronicCharsValueRepository electronicCharsValueRepository;

public TabCharsController(TabRepository tabRepository,
                          TabCharsRepository tabCharsRepository,
                          ElectronicCharsNameRepository electronicCharsNameRepository,
                          ElectronicCharsValueRepository electronicCharsValueRepository) {
    this.tabRepository = tabRepository;
    this.tabCharsRepository = tabCharsRepository;
    this.electronicCharsNameRepository = electronicCharsNameRepository;
    this.electronicCharsValueRepository = electronicCharsValueRepository;
}

@GetMapping("tab/{id}/characts")
public String tabCharList(@PathVariable Long id, Model model) throws 
Exception{

    Tab tab = tabRepository.findById(id).orElseThrow(() -> new 
Exception("PostId " + id + " not found"));
    List<ElectronicCharactsName> elCharList = 
electronicCharsNameRepository.findAll();
    List<ElectronicCharactsValue> elCharValueList = 
electronicCharsValueRepository.findAll();
    List<TabChars> tabChars = tab.getCharacts();
    model.addAttribute("model", tab.getModel());
    model.addAttribute("tabChars", tabChars);
    model.addAttribute("elCharList", elCharList);
    model.addAttribute("elCharValueList", elCharValueList);
    return "tab/tabCharList";
}

@GetMapping("/tab/characts/{id}/delete")
public String deleteTab(@PathVariable("id") TabChars tabChars){
    tabCharsRepository.delete(tabChars);
    return "redirect:/tab/{id}/characts"; //THIS REDIRECT IS INCORRECT
}

型号：

@Entity
@Table(name = "tabChars")
public class TabChars {

@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;


private String name;
private String value;

@ManyToOne
@JoinColumn(name = "tab_id")
private Tab tab;

public TabChars() {
}

public TabChars(String name, String value, Tab tab) {
    this.name = name;
    this.value = value;
    this.tab = tab;
}

public Tab getTab() {
    return tab;
}

public void setTab(Tab tab) {
    this.tab = tab;
}

public Long getId() {
    return id;
}

public void setId(Long id) {
    this.id = id;
}

public String getName() {
    return name;
}

public void setName(String name) {
    this.name = name;
}

public String getValue() {
    return value;
}

public void setValue(String value) {
    this.value = value;
}
}

查看：

<#import "../parts/common.ftl" as c>
<@c.page>
<h3>${model}</h3>
<div class="col-3" id="add_form">
<form method="post" action="/tab/${id}/characts">
    <div class="form-group">
    <select name="name" class="form-control">
        <#list elCharList as elect>
            <option>${elect.charName}</option>
        </#list>
    </select>
    </div>
    <div class="form-group">
    <select name="value" class="form-control">
        <#list elCharValueList as elect>
            <option>${elect.charValue}</option>
        </#list>
    </select>
    </div>
    <input type="hidden" name="id" value="${id}" class="form-control">
    <input type="hidden" name="_csrf" value="${_csrf.token}">
    <button type="submit" class="btn btn-primary form-control">Add</button>
</form>
</div>
<div>
<table class="table">
    <thead class="thead-dark">
    <tr>
        <th>Name</th>
        <th>Value</th>
        <th>Edit</th>
        <th>Delete</th>
    </tr>
    </thead>
        <#list tabChars as char>
        <tr>
            <td>${char.name}</td>
            <td>${char.value}</td>
            <td><a href="/tabCharact/${char.id}">Edit</a></td>
            <td><a href="/tab/characts/${char.id}/delete">Delete</a></td> //HERE
        </tr>
        </#list>
</table>
</div>
</@c.page>

那么，我应该在RETURN中的TabCharsController deleteTab方法中键入什么？

控制器中的映射URL（从相关表中删除数据）Spring Boot

0 个答案: