大约有 40,000 项符合查询结果（耗时：0.0730秒） [XML]
How do I import the javax.servlet API in my Eclipse project?
...In case you already had Eclipse IDE for Java (without Enterprise), and manually installed some related plugins, then chances are that it wasn't done properly. You'd best trash it and grab the real Eclipse IDE for Enterprise Java one.
You also need to ensure that you already have a servletcontainer i...
How to sort the result from string_agg()
...
With postgres 9.0+ you can write:
select string_agg(product,' | ' order by product) from "tblproducts"
Details here.
share
|
improve this answer
|
...
Unique combination of all elements from two (or more) vectors
...sing, which works better than the classic expand.grid function because (1) strings are not converted into factors and (2) the sorting is more intuitive:
library(tidyr)
a <- c("ABC", "DEF", "GHI")
b <- c("2012-05-01", "2012-05-02", "2012-05-03", "2012-05-04", "2012-05-05")
crossing(a, b)
# ...
Use JAXB to create Object from XML String
How can I use the below code to unmarshal a XML string an map it to the JAXB object below?
4 Answers
...
Avoiding instanceof in Java
... Why do you iterate over all methods instead of using getMethod(String name, Class<?>... parameterTypes)? Or else I would replace == with isAssignableFrom for the parameter's type check.
– Aleksandr Dubinsky
Jan 22 '15 at 16:24
...
Dual emission of constructor symbols
...rding to the ABI, the mangled name for your Thing::foo() is easily parsed:
_Z | N | 5Thing | 3foo | E | v
prefix | nested | `Thing` | `foo`| end nested | parameters: `void`
You can read the constructor names similarly, as below. Notice how the constructor "name" isn't given, but ...
How do I set the selected item in a comboBox to match my string using C#?
I have a string "test1" and my comboBox contains test1 , test2 , and test3 . How do I set the selected item to "test1"? That is, how do I match my string to one of the comboBox items?
...
What are all the possible values for HTTP “Content-Type” header?
...attribute "=" value
attribute := token
value := token / quoted-string
token := 1*
tspecials := "(" / ")" / "<" / ">" / "@" ; Must be in
/ "," / ";" / ":" / "\" / <"> ; quoted-string,
/ "/" / "[" / "]" / "?" / "." ; to use within
...
Print an integer in binary format in Java
...ming you mean "built-in":
int x = 100;
System.out.println(Integer.toBinaryString(x));
See Integer documentation.
(Long has a similar method, BigInteger has an instance method where you can specify the radix.)
share
...
How do I mock an autowired @Value field in Spring with Mockito?
...re:
Production class:
@Value("#{myProps[‘some.default.url']}")
private String defaultUrl;
Test class:
import org.springframework.test.util.ReflectionTestUtils;
ReflectionTestUtils.setField(instanceUnderTest, "defaultUrl", "http://foo");
// Note: Don't use MyClassUnderTest.class, use the inst...