如何在ajax to java调用中点击按钮

<button id="myButton">点击按钮</button>
<script>
    document.getElementById("myButton").addEventListener("click", function() {
        // 在这里编写触发ajax调用的代码
    });
</script>

document.getElementById("myButton").addEventListener("click", function() {
    var xhr = new XMLHttpRequest();
    xhr.open("POST", "your-java-endpoint-url", true);
    xhr.setRequestHeader("Content-Type", "application/json");
    xhr.onreadystatechange = function() {
        if (xhr.readyState === 4 && xhr.status === 200) {
            // 请求成功的处理逻辑
            console.log(xhr.responseText);
        }
    };
    var data = {
        // 请求参数
    };
    xhr.send(JSON.stringify(data));
});

document.getElementById("myButton").addEventListener("click", function() {
    $.ajax({
        url: "your-java-endpoint-url",
        type: "POST",
        contentType: "application/json",
        data: JSON.stringify({
            // 请求参数
        }),
        success: function(response) {
            // 请求成功的处理逻辑
            console.log(response);
        }
    });
});

@RestController
public class YourController {
    @PostMapping("/your-java-endpoint-url")
    public ResponseEntity<?> handleAjaxRequest(@RequestBody YourRequestObject request) {
        // 处理ajax请求的逻辑
        // 返回响应数据
        return ResponseEntity.ok().body("Response data");
    }
}