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JPA @ManyToMany Java.lang.StackOverflowError:null

TRACE 14504---[nio-8000-exec-1] o.h.type.descriptor.sql.basicextractor : Extracted value ([id1_2_]: [BIGINT])-[222] 2017-04-19 13:49:46.195 TRACE 14504---[nio-8000-exec-1] O.h.type.descri ptor.sql.BasicExtractor:extracted value ([login_na2_2_]: [VARCHAR])-[admin] hibernate:select roles0_.user_id as US er_id2_1_0_, roles0_.role_id as role_id1_1_0_, uacrole1_.id as id1_0_1_, Uacrole1_.role_code as role_cod2_0_1_ from Tbl_u Ac_role_user roles0_ INNER JO

Mysql Lock Summary

Tags: evel Create OCA SSL tab engine STR lock LocalLockMyISAM only supports table lockscreatetable crm_member; ##查看引擎 altertable crm_member engine = MyISAM; ##更改表引擎Read Lock DemoSession 1 Read lock Other session can be read and not writable lock table crm_member read; Session 1 Lock Wait time setting select @@global.lock_wait_timeout; ##查看锁等待时间设置 set @@global.lock_wait_timeout = 20; ##设置锁等待时间为20秒 Session 2 query data does not affect MariaDB [memberselectfromwhereid4; +------+ | name | +------+

Spark SQL External Data Sources JDBC Official implementation write test

, Overwrite:boolean)Import org.apache.spark.sql.SQLContext Import Org.apache.spark.sql.Rowimport Org.apache.spark.sql.types._val SqlContext=New SqlContext (SC) Import sqlcontext._# data preparation Val URL="Jdbc:mysql://hadoop000:3306/Test?User=RootPassword=Root "Val arr2x2=Array[Row](Row.apply ("Dave", the), row.apply ("Mary",222)) Val arr1x2=Array[Row](Row.apply ("Fred",3)) Val schema2=Structtype (Structfield ("name", StringType):: Structfield ("id"

Recursive matching of Regular Expressions

it works is that the engine's back-to-back stack stores the track of the matched group. "(? Another way of writing is "(? In this way, the count of the matched group named "DEPTH" is created on the back-to-back stack. When we find the right parenthesis, we also want to subtract one from the depth value, which is constructed by the. NET special Syntax "(? Finally ,"(? (DEPTH )(?!)) "Is used "(?!) If the "DEPTH" group is still successful so far. If the matching is successful, an unpaired left bra

Question 1126: print the subscript of the Extreme Point

Question 1126: print the subscript of the Extreme PointDescription: In an integer array, for an integer whose subscript is I, if it is greater than all its adjacent integers,Or smaller than all its adjacent integers, it is called this Integer as an extreme point, the subscript of the extreme point is I. Input: The input for each case is as follows: There are 2 × n + 1 rows of input: the first row is the number of arrays to be processed n;For the remaining 2 × n rows, the first row is the number

Operate data in JSON format in JAVA

for conversion between Java objects and Json strings; The json Development Kit has a total of three jar: ezmorph-1.0.6.jar, json-lib-2.2.3-jdk13.jar and morph-1.1.1.jar. These three jar packages have been uploaded to CSDN. Sample Code: Package com. json; import java. util. iterator; import net. sf. json. JSONArray; import net. sf. json. JSONObject;/*** Java operation JSON format data * @ author feizi * @ time 5:36:13 */public class TestJSON {public static void main (String [] args) {// jsonOb

Rarely used but powerful functions in PHP _ PHP Tutorial-php Tutorial

function_exists function determines whether a function exists (either a PHP function or a custom function ). If (function_exists ('A ')){ Echo "yes "; } Else { Echo "no "; } Function (){} // Display yes ?> The call_user_func function is similar to a special method for calling a function. the usage is as follows: Function a ($ B, $ c) { Echo $ B; Echo $ c; } Call_user_func ('a, "111", "222 "); Call_user_func ('a, "333", "444 "); // Display 111

C # WinForm in Show and ShowDialog

then summarize the form's method of passing the value:1. Through the constructor functionFeatures: Pass value is unidirectional (can not pass the value of each other), to achieve a simpleThe implementation code is as follows:In the form Form2int value1;String value2;Public Form2 (int value1, string value2){InitializeComponent ();this.value1 = value1;This.value2 = value2;}This is called in form Form1.New Form2 (111, "222"). Show (); This gives the 111

Go Language Interface detailed

. la la ...", lyrics)}//employee overloaded human Sayhi method func (E Employee) Sayhi () {fmt. Printf ("Hi, I am%s, I work in%s." Call me on%s\n ", E.name, E.company, E.phone)}//Interface men were human,student and employee implementations//Because these three types implement both methods type Men interface {Sayhi () Sing (lyrics string)}func main () {Mike: = Student{huma n{"Mike", "222-222-xxx"}, "MIT", 0

The transfer of summary parameters to old Ziko python

("Python", 1,["Qiwsir", "GitHub", "IO"]) #一一对应地赋值 P1==> python P2==> 1 p3==> [' Qiwsir ', ' GitHub ', ' io '] >>> foo ("Python")Traceback (most recent):File " ", line 1, in Typeerror:foo () takes exactly 3 arguments (1 given) #注意看报错信息 >>> foo ("python", +/--)Traceback (most recent):File " ", line 1, in Typeerror:foo () takes exactly 3 arguments (4 given) #要求3个参数, actually placed 4, error def foo (p1=value1,p2=value2,...) This way is more s

PHP calls a function through a string

1. call_user_func Function a ($ B, $ c) {echo $ B; echo $ c;} call_user_func ('A', "111", "222"); call_user_func ('A ', "333", "444"); // display 111 222 333 444?> // It is strange to call the internal methods of the class. Actually, array is used, and developers do not know how to consider it. Of course new is saved, which is also innovative: class a {function B ($ c) {echo $ c ;}} call_user_func (array ("

Features and common operations of the Python dictionary

content, can be nested, convenient for us to organize a variety of data structures, and can modify the contents in situ, belong to the mutable type.>>> binfo = {' A ': [3], ' B ':[4,5,6]}>>> binfo{' a ': [1, 2,], ' B ': [4, 5, 6]}>>> binfo[' a '][2] =5>>> binfo{' A ': [1, 2, 5], ' B ': [4, 5, 6]}3. The keys that make up the dictionary must be immutable data types, such as numbers, strings, tuples, and so on, and mutable objects such as lists cannot be keys.>>> binfo={1: ' $ ', 2: ' DD '}>>> bin

Example of using a string to call a function in php

1. call_user_func Copy codeThe Code is as follows:Function a ($ B, $ c ){Echo $ B;Echo $ c;}Call_user_func ('a, "111", "222 ");Call_user_func ('a, "333", "444 ");// Display 111 222 333 444?> The internal method of calling the class is strange. The method actually uses an array and does not know how developers think about it. Of course, the new method is saved, which is also innovative: Copy codeThe Code is

Example of using a string to call a function in php

Example of using a string to call a function in php This article describes how to call a function using a string in php. For more information, see 1. call_user_func The Code is as follows: Function a ($ B, $ c ){ Echo $ B; Echo $ c; } Call_user_func ('a, "111", "222 "); Call_user_func ('a, "333", "444 "); // Display 111 222 333 444 ?> The internal method of calling the class is strange. The method actu

Php functions call_user_func and call_user_func_array

Php tutorial functions call_user_func and call_user_func_arrayThe call_user_func function is similar to a special method for calling a function. The usage is as follows:Function a ($ B, $ c){Echo $ B;Echo $ c;}Call_user_func ('a, "111", "222 ");Call_user_func ('a, "333", "444 ");// Display 111 222 333 444?> The internal method of calling the class is strange. The method actually uses an array and does not k

Php custom functions call_user_func and call_user_func_array

When I look at the UCenter, there is a function call_user_func, which is puzzling, because I thought it was a self-defined function and the results were not found everywhere, later, Baidu learned that call_user_func is a built-in function called call_user_func, which is similar to a special method to call a function. the usage is as follows: The code is as follows: Function a ($ B, $ c){Echo $ B;Echo $ c;}Call_user_func ('a, "111", "222 ");Call_use

SecProject Web AppSec: XSS parsing Article 2

Or first explain the sample normal page: Address: http://sdl.me/challenge1/xss2/JsChallenge2.asp? Input1 = 111 input2 = 222 input3 = 333 source code: Use one: http://sdl.me/challenge1/xss2/JsChallenge2.asp? Input1 = 111 input2 = 222% 27% 29! = 2% 29 {}}/* input3 = 333% 27% 29; if % 281% 29 {if % 281% 29 {alert % 2811% 29;/*** // http://sdl.me/challenge1/xss2/JsChallenge2.asp? Input1 = 111 input2 =

Application objects and page lifecycle of Asp.net

15:35:28 192 Page_PreInit 15:35:28 192 TestUserControl. Page_Init 15:35:28 202 Page_Init 15:35:28 202 TestUserControl. TestProperty. Set 15:35:28 202 Page_InitComplete 15:35:28 202 Page_PreLoad 15:35:28 202 Page_Load 15:35:28 202 TestUserControl. Page_Load 15:35:28 202 TestUserControl. ShowData () 15:35:28 212 TestUserControl. Repeater1.ItemDataBound () 15:35:28 212 TestUserControl. Repeater1.ItemDataBound () 15:35:28 212 TestUserControl. Repeater1.ItemDataBound () 15:35:28 212 TestUserControl.

WinForm Development, form display and form value related knowledge summary

simpleThe implementation code is as follows:In the form Form2int value1;String value2;Public Form2 (int value1, string value2){InitializeComponent ();this.value1 = value1;This.value2 = value2;}This is called in form Form1.New Form2 (111, "222"). Show (); This gives the 111, "222", 2 values to the Form22. Passing Static variablesFeatures: The pass value is bidirectional, the realization is simpleThe impleme

Summary of PHP array functions

First, create a new arrayThe array has no size limit, so you can create an array simply by creating a reference, for example: $state [0]= ' 111 '; $state [1]= ' 222 '; If the index value is a numeric index and is incremented, the index value can also be omitted at creation time.$state [] = ' 111 '; $state [] = ' 222 ';Arrays can be created using array (), such as: $state =array (' 111 ', '

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