Term
Fill in the blanks:
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException {
response.setContentType(someMimeType);
byte[] data = goGetSomeDataSomeplace();
__________________ out =
response.get__________________ ();
out.write(data);
out.flush();
out.close();
} |
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Definition
ServletOutputStream out =
response.getOutputStream();
(page 129) |
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Term
Fill in the blanks:
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException {
response.setContentType("text/plain");
String text = goGetSomeTextSomeplace();
__________________ out =
response.get__________________ ();
out.println(text);
} |
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Definition
PrintWriter out = response.getWriter();
(page 132) |
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Term
Both the setHeader(String,String) and addHeader(String,String) methods of the HttpServletResponse interface will add the specifed header name and value to the response if it does not already exist.
What does each method do if the header does already exist? |
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Definition
-
setHeader(String,String) will overwrite the header's current value with the new value.
-
addHeader(String,String) will add the new value to the header's list of values.
(page 133)
Note: The getHeaders() method returns Collection<String>. |
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Term
Can a postRequest be bookmarked?
How do we know when to use a post request? |
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Definition
No only Get requests can be bookmarked
use a post request when you want to update or change something on the server. pg.111 |
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Term
Is Post indempotent?
Is Get indempotent?
What bad thing can happen is a Post is used twice?
|
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Definition
Get is indempotent
Post is not indempotent
If we post something to the server more than one a second transaction can occure
pg 116 |
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Term
| Can you implement a non indempotent doGet()? |
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Definition
Yes, there is nothing fromm stopping you from implementing a non indempotent doGet(), although this is against the servlet spec.
pg116 |
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