Web.config中所修改的节点已存在
只需在<add>前加入<remove>节点
<configuration>
<connectionStrings>
<remove name="constr"/>
<add name="constr" connectionString="server=.;database=jeryTest;uid=sa;pwd=sa;"/>
</connectionStrings>
</configuration>
只需在<add>前加入<remove>节点
<configuration>
<connectionStrings>
<remove name="constr"/>
<add name="constr" connectionString="server=.;database=jeryTest;uid=sa;pwd=sa;"/>
</connectionStrings>
</configuration>