抛异常给前端的方式

public class ContentController {

    @Autowired
    private ContentService contentService;
    
    @RequestMapping("/list/{contentCategoryId}")
    @ResponseBody
    public TaotaoResult getContentList(@PathVariable Long contentCategoryId) {
        try {
            List<TbContent> list = contentService.getContentList(contentCategoryId);
            return TaotaoResult.ok(list);
        } catch (Exception e) {
            e.printStackTrace();
            return TaotaoResult.build(500, ExceptionUtil.getStackTrace(e));
        }
    }
}

package com.taotao.common.utils;

import java.io.PrintWriter;
import java.io.StringWriter;

public class ExceptionUtil {

    /**
     * 获取异常的堆栈信息
     * 
     * @param t
     * @return
     */
    public static String getStackTrace(Throwable t) {
        StringWriter sw = new StringWriter();
        PrintWriter pw = new PrintWriter(sw);

        try {
            t.printStackTrace(pw);
            return sw.toString();
        } finally {
            pw.close();
        }
    }
}