public class OutServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//1字節流
ServletOutputStream out = response.getOutputStream();
out.print("Hello1");
//out.print("湖南城院");//不能以這種方式輸出中文
out.write("湖南城市學院1".getBytes());
//2字符流
response.setContentType("text/html;charset=utf-8");//該句等價下面兩句
//response.setContentType("text/html;");
//response.setCharacterEncoding("utf-8");//對字節流無效
PrintWriter out2 = response.getWriter();
out2.println("Hello2");
out2.println("湖南城市海陸空");
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//1字節流
ServletOutputStream out = response.getOutputStream();
out.print("Hello1");
//out.print("湖南城院");//不能以這種方式輸出中文
out.write("湖南城市學院1".getBytes());
//2字符流
response.setContentType("text/html;charset=utf-8");//該句等價下面兩句
//response.setContentType("text/html;");
//response.setCharacterEncoding("utf-8");//對字節流無效
PrintWriter out2 = response.getWriter();
out2.println("Hello2");
out2.println("湖南城市海陸空");
}
}
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<a href="<%=request.getContextPath()%>/servlet/OutServlet">servlet中的兩個輸出流:字節流和字符流</a>
<form action="<%=request.getContextPath()%>/servlet/OutServlet" method="post">
姓名:<input type="text" name="name"/>
<input type="submit" value="提交">
</form>
<hr/>
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1、servlet中的兩個輸出流:字節流(response.getOutputStream()) 和字符流(response.getWriter())
1)用字節流輸出時，中文要采用out.write("中文".getBytes())。 對於字節流，用response.setCharacterEncoding("utf-8")設了也不行。
2)用字符流輸出時，無論中英文都是：out2.print(); //編碼用 response.setContentType("text/html;charset=utf-8");
3）※※※兩種流不能共存(無論是GET或POST方式提交): 用了字節流就不能同時用字符，反之變然!