after reading the document, it is said to add @ Excel (needMerge=true) to the fields that need to be juxtaposed on the entity class. I don"t know how to set the juxtaposition data relationship. There are few examples on the Internet. Which god can give a simple example?
< H1 > question < H1 > poi reports an Duplicate PageSettingsBlock record exception when reading the xls file exported by the company s reporting system. org.apache.poi.hssf.record.RecordFormatException: Duplicate PageSettingsBlock record (sid=0x29) ...
The requirement is to take a pptx file and update the charts in some slides based on the data in other excel. question: updating the data in the chart does not automatically update the range of ordinates, resulting in display problems the prob...
I have a paragraph in word Xxxxxxxxxxxxxxxxxxxxxxxx$ {name of tendering agency}, dididdxxxxxxxxxxxx test ${name of tendering agency}. I want to replace the ${} package variable with the actual value when reading the paragraph using poi, I cannot read...
it is a bit confusing to see that the 23-bit Mantissa determines that the single-precision floating-point decimal precision is 7 digits. The 23-bit binary can only show that the M of the binary Mantissa 1.M can represent 2 ^ 23 digits. How can it be ...
error message: Caused by: org.apache.xmlbeans.XmlException: Element themeManager@ http: schemas.openxmlformats. is not a valid document@ http: schemas.openxmlformats. document or a valid substitution. error code: XWPFDocument doc = new XWPFDocume...
my requirements are like this: word document type is xml, open with a text editor to see the following code (I only copied the header part of the code) how java can convert it to word type doc documents, Apache s poi seems to only convert word docume...
ref: StackOverflow s question address The answer explained that weak reference counters have an impact on the life cycle of control block. I understand that new is different from make_shared, but I don t understand why control block needs to maint...
java.lang.IllegalArgumentException: Minumum row number is 0 error is reported when exporting excel data specific errors are as follows: 17 47 16 46 15 45 14 44 13 43 12 42 java.lang.IllegalArgumentException: Minumum row number is 0 at org.apache.p...
phpstorm encountered a problem when looking at the value of a variable when using xdebug for breakpoint debugging . the array variables above cannot view the content, but only show can not get property what caused this? add: suspected to be a probl...
the code is as follows: File f = new File("D: demo.pptx"); InputStream in = new FileInputStream(f); XMLSlideShow slideShow = new XMLSlideShow(in); XSLFSlideLayout layOut = slideShow.getSlideMasters()[0].getLayout(S...
when making WeChat Mini Programs payment, the callback address must be an address available on the public network, so the code is put on the server. but when there is something wrong with the callback code, it is very tricky to debug. It is customary t...
< H1 > Code < H1 > -sharpinclude <stdio.h> struct test{ int i; short c; char *p; }; int main(void) { struct test *pt = NULL; printf("%p n", &(pt->i)); printf("%p n", &(pt->c)); prin...
suppose there is item number P1PowerP2and its price 10d20, the first column of the excel table generated by is a drop-down list, the median value of which is P1 or P2, select P1, the first row and the second column automatically populate the price 10 ...
ask for upload plug-ins that support ie8. Thank you. Webuploader is used. It doesn t seem to work. ...
this section gives an example for pointers: look for the existence of a character in a data structure. the following is what I wrote routinely: -sharpinclude <stdio.h> -sharpdefine TRUE 1 -sharpdefine FALSE 0 int find_str(char **, char); int f...
In the Coursera algorithm class, there is a material (FAQ s eighth question) that mentions that floating point numbers can be directly compared in this course project. The specific situation is as follows: enter integers a and b in the range of ...
when learning go pointers, we think that the pointer variable stores the value of the memory address, and the * operator can get the stored value of the memory . then when you join the pointer to the array ( array pointer ), you find that you can manip...
I feel that pointers are not needed at all in this place. Why do I see many related examples using pointers? There is some doubt package main import ( "fmt" "net http" ) type MyMux struct { } func (p *MyMux) ServeHTTP(w...
How can the cell style be implemented in poi? There are many spaces between "date " and "Party A " ...
<polyline class="a" points="4960,1920 11040,8000 4960,14080 ">< polyline> the current size is this I want to be small in proportion. What tools can I use? calls to polyline, for the first time, so I don t know where...