浏览器展示图片（非下载）- java

package com.bj58.usdt.mobi.infolist.model;

import com.bj58.wf.mvc.ActionResult;
import com.bj58.wf.mvc.BeatContext;
import com.bj58.wf.mvc.MvcConstants;
import org.apache.commons.lang.StringUtils;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletResponse;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.util.Set;

/**

• 静态资源展示（页面静态资源nginx跳转，为防止本地报错）

• @author
  */
  public class ResourceViewResult extends ActionResult {

  private String contentType;
  private String path;

  public ResourceViewResult(String path) {
  this.path = path;
  }
  public ResourceViewResult(String path,String contentType) {
  this.path = path;
  this.contentType = contentType;
  }

  @Override
  public void render(BeatContext beat) throws Exception {
  /**
  * beat.getResponse().addHeader("Content-Length",""+512);beat.getResponse().setContentType("image/"+"png");
  * **/

   beat.getResponse().setContentType("text/html;charset=UTF-8");
   if(StringUtils.isNotEmpty(contentType)){
       beat.getResponse().setContentType(contentType);
   }
  
   InputStream inputStream = beat.getServletContext().getResourceAsStream(path);
   OutputStream outputStream = beat.getResponse().getOutputStream();
  
   byte[] buffer = new byte[1024];
   int len = -1;
   while((len = inputStream.read(buffer))!=-1){
       outputStream.write(buffer,0,len);
       outputStream.flush();
   }
   outputStream.close();
   inputStream.close();
  

  }
  }