Java中流的关闭

Question

1.response.getWriter().print(""); 2.PrintWriter out = response.getWriter(); out.print(""); out.close(); 第一种方式可以吗?流会自动关闭吗?

Answer 1

response.getWriter().print("");不会自动关闭

response.getWriter源码
public PrintWriter getWriter()
/*     */     throws IOException
/*     */   {
/* 213 */     PrintWriter writer = this.response.getWriter();
/* 214 */     if (isFinished()) {
/* 215 */       this.response.setSuspended(true);
/*     */     }
/* 217 */     return writer;
/*     */   }
print方法源码
public void print(String s) {
        if (s == null) {
            s = "null";
        }
        write(s);
    }