19 Hours: Fuzzy query three solutions ways

.1) There are several ways for these fuzzy queries

　　1.${}

　　　　1.1 Use the following

 <if test="stuName!=null and stuName!=''">and stuName like '%${stuName}%'</if>

　　　　　　1.1.1 This safety problems when the method is not recommended

　　2. by value, directly transmitted% xxx% # {value} then received

　　　　2.1 Use the following

 student.setStuName("%p%");

<if test="stuName!=null and stuName!=''">and stuName like #{stuName}</if>　　

　　3.band label to deal

　　　　3.1 Use the following

<bind name="_stuName" value="'%'+stuName+'%'"></bind>
            <if test="stuName!=null and stuName!=''">and stuName like #{_stuName}</if>

　　　　3.1.1 can bind corresponding to a plurality of secondary stations to deal with the values ​​accessed by name name