ibatis项目启动报错The string "--" is not permitted within comments【原】

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sqlMapConfig PUBLIC "-//iBATIS.com//DTD SQL Map Config 2.0//EN" "http://www.ibatis.com/dtd/sql-map-config-2.dtd">
<sqlMapConfig> 
  <settings cacheModelsEnabled="true" enhancementEnabled="true" lazyLoadingEnabled="true" errorTracingEnabled="true" maxRequests="100" maxSessions="100" maxTransactions="100" useStatementNamespaces="true"/>  

  <!-- 老师 -->
  <sqlMap resource="com/test/edu/sqlmap/sqlmap-teacher.xml"/>

  <!-- 学生 -->
  <sqlMap resource="com/test/edu/sqlmap/sqlmap-student.xml"/>
</sqlMapConfig>

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sqlMap PUBLIC "-//iBATIS.com//DTD SQL Map 2.0//EN"
        "http://www.ibatis.com/dtd/sql-map-2.dtd">

<sqlMap>
    <!-- 统计学生-->
    <select id="countStudent" parameterClass="com.test.edu.Student"
        resultClass="com.test.edu.Student">
        select * from tbl_student where id = ‘1‘;
    </select>
</sqlMap>