我正在使用 com.sun.net.httpserver 提供 html 页面,文本内容正确显示,但我无法让它提供图像,这是我的代码的样子:
static String Test(int Font_Size,String First_Name,String Last_Name)
{
String Pic_File="C:/Dir_Resume_App/Dir_Resume_Picture/Hi_Test.jpg";
String Resume="<Table><Tr><Td><H2>First_Name Last_Name</H2></Td></Tr><Tr><Td><Img Src=\"file://"+Pic_File+"\" alt=Hi_Test width=268 height=201><br>"+(Pic_File+" : exists = "+new File(Pic_File).exists())+"</Td></Tr></Table>\n";
...
return Resume;
}
这是结果:
从结果中可以看出,图像文件存在,但是路径“file://C:/Dir_Resume_App/Dir_Resume_Picture/Hi_Test.jpg”无法引导它显示图像。
我也尝试过相对路径,例如“Dir_Resume_Picture/Hi_Test.jpg”、“/Dir_Resume_Picture/Hi_Test.jpg”、“../Dir_Resume_Picture/Hi_Test.jpg”、“../../Dir_Resume_Picture/Hi_Test.jpg” ”和“Dir_Resume_App/Dir_Resume_Picture/Hi_Test.jpg”,它们都不起作用,有人成功地使用 com.sun.net.httpserver 提供图像吗?
我怀疑我可能错过了 http 标头中的某些内容,例如告诉它如何提供图像而不仅仅是纯文本,这可能是原因吗?现在它看起来像这样:
InetSocketAddress addr=new InetSocketAddress(Port);
HttpServer server=HttpServer.create(addr,0);
server.createContext("/"+App_Id,new MyHandler(server));
...
class MyHandler implements HttpHandler
{
HttpServer server;
public MyHandler(HttpServer server) { this.server=server; }
public void handle(HttpExchange exchange)
{
OutputStream responseBody=exchange.getResponseBody();
String requestMethod=exchange.getRequestMethod(),requestPath=exchange.getRequestURI().getPath(),line,title="Match Skillsets",
responseString="<Html>\n<Head>\n <Title>"+title+"</Title>\n </Head>\n<Body>\n<Center>\n";
BufferedReader in=new BufferedReader(new InputStreamReader(exchange.getRequestBody()));
LinkedHashMap<String,String> params=queryToMap(exchange.getRequestURI().getQuery());
try
{
if (requestMethod.equalsIgnoreCase("GET"))
{
Headers responseHeaders=exchange.getResponseHeaders();
// responseHeaders.set("Content-Type","text/plain");
responseHeaders.set("Content-Type","text/html;charset=utf-8");
exchange.sendResponseHeaders(200,0);