小编Log*_*ror的帖子

我有简单的POJO课程

public class Option {
    String optionText;

    public String getOptionText() {
        return optionText;
    }

    public void setOptionText(String optionText) {
        this.optionText = optionText;
    }

    @Override
    public String toString() {
        return optionText;
    }

}

在那里我正在创建一个Set对象,并希望将该对象转换为String [],我的逻辑是

public class Main {
    Set<Option> options = new HashSet<Option>();
    public Main() {
        Option option1 = new Option();
        option1.setOptionText("Option 1");      
        options.add(option1);
        Option option2 = new Option();
        option2.setOptionText("Option 2");      
        options.add(option2);
        Option option3 = new Option();
        option3.setOptionText("Option 3");      
        options.add(option3);
        Option option4 = new Option();
        option4.setOptionText("Option 4");      
        options.add(option4);

        System.out.println("Set<Option> size …

我想json从JPA 生产@Entity,我有

@Entity
@JsonAutoDetect
public class Bar implements Serializable {     
    @Id
    @GeneratedValue
    private Integer id;
    private String title;
    //omitting other stuff
}

我的控制器是

@RestController
public class BarController {

    @Autowired
    private BarService barService;

    @RequestMapping(value = "/", method = RequestMethod.GET, headers = "Accept=application/json", produces={"application/json"})

    public List<Bar> list() {            
        return barService.findAllBars());
    }

}

我在浏览器中遇到此错误

并在邮递员

这有什么问题.

我有一个从url获取价值的问题,我有一个链接显示我的模态

<a href='#modal?userId=<%=resultSet.getInt("drid")%>' class="button-border toggleModal">Apportionment</a>

上面的链接打开了模式,如下所示

<div id="modal" class="modal">    
    <header>
      <h2>Appointment Form</h2>      
    </header>
    <form action="addappoinment.jsp" method="post">
        <input type="hidden" id="docId" name="docid" value=""><br>
        <input type="text" required><br>
        <input type="text" required><br>
        <input type="text" required><br>
        <input type="text" required><br>
        <textarea rows="4" cols="21"></textarea><br> 
        <button class="button-border button-success" type="submit">
     Done</button>

    <button class="button-border button-error pull-right toggleModal">
      Cancel</button>       
      </form>    
  </div>

现在我有一个网址

http://localhost:8080/app/#modal?userId=1

现在我想userId使用javascript 获取参数值

<script type="text/javascript">

function getParameterByName(name) {
    name = name.replace(/[\[]/, "\\[").replace(/[\]]/, "\\]");
    var regex = new RegExp("[\\?&]" + name + "=([^&#]*)"),
        results = regex.exec(location.search);
    return results === …