JSP根据参数默认选中radio

方式一：EL表达式

<input type="radio" name="sex" value="男" id="male" ${("男" eq sessionScope.blogger.sex)?"checked":""  } /><label for="male">男</label><input type="radio" name="sex" value="女" id="female" ${("女" eq sessionScope.blogger.sex)?"checked":""  } /><label for="female">女</label>

方式二：jsp传统方式

<% Blogger blogger = (Blogger)session.getAttribute("blogger");String sex = "";if(blogger != null){sex = blogger.getSex();}%><input type="radio" name="sex" value="男" id="male" <%= ("男".equals(sex))?"checked":"" %> /><label for="male">男</label><input type="radio" name="sex" value="女" id="female" <%= ("女".equals(sex))?"checked":"" %> /><label for="female">女</label>