基于jQuery与Spring MVC实现用户密码异步修改的实战演示

// 前端jQuery代码
$(document).ready(function() {
    $('#changePasswordForm').submit(function(e) {
        e.preventDefault();
        $.ajax({
            type: 'POST',
            url: '/user/changePassword',
            data: $(this).serialize(),
            success: function(data) {
                if (data.status === 'success') {
                    alert('密码修改成功！');
                    $('#currentPassword').val('');
                    $('#newPassword').val('');
                    $('#confirmNewPassword').val('');
                } else {
                    alert('密码修改失败：' + data.message);
                }
            },
            error: function() {
                alert('发生未知错误，密码修改失败。');
            }
        });
    });
});

// Spring MVC Controller部分
@Controller
@RequestMapping("/user")
public class UserController {

    @PostMapping("/changePassword")
    @ResponseBody
    public Map<String, String> changePassword(
            @RequestParam("currentPassword") String currentPassword,
            @RequestParam("newPassword") String newPassword,
            @RequestParam("confirmNewPassword") String confirmNewPassword,
            Principal principal) {
        Map<String, String> response = new HashMap<>();
        if (!newPassword.equals(confirmNewPassword)) {
            response.put("status", "error");
            response.put("message", "新密码与确认密码不一致。");
        } else if (currentPassword.equals(newPassword)) {
            response.put("status", "error");
            response.put("message", "新密码不能与旧密码相同。");
        } else {
            // 假设有一个UserService用于密码修改
            boolean isPasswordChanged = userService.changePassword(principal.getName(), newPassword);
            if (isPasswordChanged) {
                response.put("status", "success");
            } else {
                response.put("status", "error");
                response.put("message", "密码修改失败，请确认旧密码正确。");
            }
        }
        return response;
    }
}