錯誤原因如下

   <select id="getSoftToolList" parameterType="String" resultType="SoftTool">
        SELECT id,title,language,info,download_url,password,updatetime,environment,weburl,author FROM tb_tools
        <where>
            <if test="title!=null and title!=''">title LIKE concat('%',#{title},'%')</if>
        </where>
    </select>
 

是因為if中test裡寫錯了

   <select id="getSoftToolList" parameterType="String" resultType="SoftTool">
        SELECT id,title,language,info,download_url,password,updatetime,environment,weburl,author FROM tb_tools
        <where>
            <if test="_parameter!=null and _parameter!=''">title LIKE concat('%',#{title},'%')</if>
        </where>
    </select>
 

test="_parameter!=null and _parameter!=' '"

問題解決！