JAvaはajaxリクエストツールクラス、ステータスコードなどの情報を返す

JAvaはajaxリクエストツールクラスを返します

package com.example.demo.util;

import java.util.HashMap;

/**
 *       
 *
 * @author liming
 */
public class AjaxResult extends HashMap
{
    private static final long serialVersionUID = 1L;

    /**     */
    public static final String CODE_TAG = "code";

    /**      */
    public static final String MSG_TAG = "msg";

    /**      */
    public static final String DATA_TAG = "data";

    /**
     *           AjaxResult   ，         。
     */
    public AjaxResult()
    {
    }

    /**
     *           AjaxResult   
     *
     * @param code    
     * @param msg     
     */
    public AjaxResult(int code, String msg)
    {
        super.put(CODE_TAG, code);
        super.put(MSG_TAG, msg);
    }

    /**
     *           AjaxResult   
     *
     * @param code    
     * @param msg     
     * @param data     
     */
    public AjaxResult(int code, String msg, Object data)
    {
        super.put(CODE_TAG, code);
        super.put(MSG_TAG, msg);
        if (data != null)
        {
            super.put(DATA_TAG, data);
        }
    }

    /**
     *       
     *
     * @return     
     */
    public static AjaxResult success()
    {
        return AjaxResult.success("    ");
    }

    /**
     *       
     *
     * @return     
     */
    public static AjaxResult success(Object data)
    {
        return AjaxResult.success("    ", data);
    }

    /**
     *       
     *
     * @param msg     
     * @return     
     */
    public static AjaxResult success(String msg)
    {
        return AjaxResult.success(msg, null);
    }

    /**
     *       
     *
     * @param msg     
     * @param data     
     * @return     
     */
    public static AjaxResult success(String msg, Object data)
    {
        return new AjaxResult(HttpStatus.SUCCESS, msg, data);
    }

    /**
     *       
     *
     * @return
     */
    public static AjaxResult error()
    {
        return AjaxResult.error("    ");
    }

    /**
     *       
     *
     * @param msg     
     * @return     
     */
    public static AjaxResult error(String msg)
    {
        return AjaxResult.error(msg, null);
    }

    /**
     *       
     *
     * @param msg     
     * @param data     
     * @return     
     */
    public static AjaxResult error(String msg, Object data)
    {
        return new AjaxResult(HttpStatus.ERROR, msg, data);
    }

    /**
     *       
     *
     * @param code    
     * @param msg     
     * @return     
     */
    public static AjaxResult error(int code, String msg)
    {
        return new AjaxResult(code, msg, null);
    }
}

カスタムリターンステータスコードクラス

package com.example.demo.util;
/**
 *      
 *
 * @author liming
 */
public interface HttpStatus
{
    /**
     *     
     */
    public static final int SUCCESS = 200;

    /**
     *       
     */
    public static final int CREATED = 201;

    /**
     *        
     */
    public static final int ACCEPTED = 202;

    /**
     *         ，        
     */
    public static final int NO_CONTENT = 204;

    /**
     *       
     */
    public static final int MOVED_PERM = 301;

    /**
     *    
     */
    public static final int SEE_OTHER = 303;

    /**
     *        
     */
    public static final int NOT_MODIFIED = 304;

    /**
     *       （  ，     ）
     */
    public static final int BAD_REQUEST = 400;

    /**
     *    
     */
    public static final int UNAUTHORIZED = 401;

    /**
     *     ，    
     */
    public static final int FORBIDDEN = 403;

    /**
     *   ，     
     */
    public static final int NOT_FOUND = 404;

    /**
     *     http  
     */
    public static final int BAD_METHOD = 405;

    /**
     *     ，      
     */
    public static final int CONFLICT = 409;

    /**
     *       ，    
     */
    public static final int UNSUPPORTED_TYPE = 415;

    /**
     *       
     */
    public static final int ERROR = 500;

    /**
     *      
     */
    public static final int NOT_IMPLEMENTED = 501;
}

使用方法:
BaseController

package com.example.demo.controller;

import com.example.demo.util.AjaxResult;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * web       
 *
 * @author liming
 */
public class BaseController {
    protected final Logger logger = LoggerFactory.getLogger(BaseController.class);
    /**
     *       
     *
     * @param rows     
     * @return     
     */
    protected AjaxResult toAjax(int rows) {
        return rows > 0 ? AjaxResult.success() : AjaxResult.error();
    }
}

コントロールコントローラでは、BaseControllerを呼び出すtoAjax()を追加、削除、変更し、AjaxResult()を呼び出すsuccess()をクエリーします.

return AjaxResult.error(HttpStatus.FORBIDDEN,"    ，    ");

上記の設定エラーメッセージで

@RestController
@RequestMapping("/system/dept")
public class SysDeptController extends BaseController
{
    @Autowired
    private ISysDeptService deptService;

    /**
     *       
     */
    @PreAuthorize("@ss.hasPermi('system:dept:list')")
    @GetMapping("/list")
    public AjaxResult list(SysDept dept)
    {
        List depts = deptService.selectDeptList(dept);
        return AjaxResult.success(deptService.buildDeptTree(depts));
    }

    /**
     *             
     */
    @PreAuthorize("@ss.hasPermi('system:dept:query')")
    @GetMapping(value = "/{deptId}")
    public AjaxResult getInfo(@PathVariable Long deptId)
    {
        return AjaxResult.success(deptService.selectDeptById(deptId));
    }

    /**
     *          
     */
    @GetMapping("/treeselect")
    public AjaxResult treeselect(SysDept dept)
    {
        List depts = deptService.selectDeptList(dept);
        return AjaxResult.success(deptService.buildDeptTreeSelect(depts));
    }

    /**
     *            
     */
    @GetMapping(value = "/roleDeptTreeselect/{roleId}")
    public AjaxResult roleDeptTreeselect(@PathVariable("roleId") Long roleId)
    {
        return AjaxResult.success(deptService.selectDeptListByRoleId(roleId));
    }

    /**
     *     
     */
    @PreAuthorize("@ss.hasPermi('system:dept:add')")
    @Log(title = "    ", businessType = BusinessType.INSERT)
    @PostMapping
    public AjaxResult add(@Validated @RequestBody SysDept dept)
    {
        if (UserConstants.NOT_UNIQUE.equals(deptService.checkDeptNameUnique(dept)))
        {
            return AjaxResult.error("    '" + dept.getDeptName() + "'  ，       ");
        }
        dept.setCreateBy(SecurityUtils.getUsername());
        return toAjax(deptService.insertDept(dept));
    }

    /**
     *     
     */
    @PreAuthorize("@ss.hasPermi('system:dept:edit')")
    @Log(title = "    ", businessType = BusinessType.UPDATE)
    @PutMapping
    public AjaxResult edit(@Validated @RequestBody SysDept dept)
    {
        if (UserConstants.NOT_UNIQUE.equals(deptService.checkDeptNameUnique(dept)))
        {
            return AjaxResult.error("    '" + dept.getDeptName() + "'  ，       ");
        }
        else if (dept.getParentId().equals(dept.getDeptId()))
        {
            return AjaxResult.error("    '" + dept.getDeptName() + "'  ，         ");
        }
        dept.setUpdateBy(SecurityUtils.getUsername());
        return toAjax(deptService.updateDept(dept));
    }

    /**
     *     
     */
    @PreAuthorize("@ss.hasPermi('system:dept:remove')")
    @Log(title = "    ", businessType = BusinessType.DELETE)
    @DeleteMapping("/{deptId}")
    public AjaxResult remove(@PathVariable Long deptId)
    {
        if (deptService.hasChildByDeptId(deptId))
        {
            return AjaxResult.error("      ,     ");
        }
        if (deptService.checkDeptExistUser(deptId))
        {
            return AjaxResult.error("      ,     ");
        }
        return toAjax(deptService.deleteDeptById(deptId));
    }
}