Request method
Common methods in doget/post
Garbled problem
| effect | Code |
|---|---|
| Prevent garbled pages | setContentType(“text/html;charset=utf-8”); |
| Prevent garbled code when getting post | setCharacterEncoding(“utf-8”); |
basic function
| effect | Code |
|---|---|
| Get virtual path | getContextpath() |
| Get url | getRequestURI() relative path--getRequestURL() absolute path |
| Get the value of the request header | getHeader(String name); |
| Get the names of all request headers | getHeadernames(); |
Get stream
| effect | Code |
|---|---|
| Character stream | getrReader() |
| Byte stream | getIntputStream () |
Get request parameters
| effect | Code |
|---|---|
| Get the value based on the parameter name | getParmeter(String name); |
| Get the value array based on the parameter name | getParmeterValues(String name); |
| Get the map collection of all parameters | getParmetermap(); |
Request forwarding
| effect | Code |
|---|---|
| Get transponder object | getRequestDispatcher(String path) |
| Forwarding using forwarder object | forward(request,response) |
basic function
| effect | Code |
|---|---|
| Storing data | setAttribute(String name,Object obj) |
| Get by key value | getAttitude(String nam) |
| Remove by key value | removeAttibute(String name) |