How to pass java string array into golang&java list to golang slice

[bosscloud]

Hello, need your help

I use []string in golang now, so how to call it in java?

package main

import (
	"C"
	"fmt"
	"github.com/xuri/excelize/v2"
	"math/rand"
	"strconv"
)

func main() {
	var tableHeaderEn []string
	tableHeaderEn = []string{"Item", "Name", "Age", "Gender", "Project", "Time"}
	testTimeExcel2("Book3.xlsx", "Sheet1", tableHeaderEn)

	//go build -buildmode=c-shared -o excel_stream.dll
	//go build -ldflags "-s -w" -buildmode=c-shared -o excel_stream.dll excel_stream.go
}

//export testTimeExcel2
func testTimeExcel2(excelFilePath string, iterationName string, tableHeaderEn []string) {
	fmt.Println("Start generating test time excel.")
	var xlsx *excelize.File
	var err error
	if xlsx, err = excelize.OpenFile(excelFilePath); err != nil {
		xlsx = excelize.NewFile()
	}

	streamWriter, err := xlsx.NewStreamWriter(iterationName) //"Sheet1" Ctrl+Alt+Y
	if err != nil {
		fmt.Println(err)
	}

	//表头样式
	styleIdEn, err := xlsx.NewStyle(&excelize.Style{Font: &excelize.Font{Color: "#777777"}})
	if err != nil {
		fmt.Println(err)
	}

	styleIdCn, err := xlsx.NewStyle(&excelize.Style{Font: &excelize.Font{Bold: true, Family: "Times New Roman"}})
	if err != nil {
		fmt.Println(err)
	}

	//表头名称第一行
	//var tableHeaderEn []string
	//tableHeaderEn = []string{"Item", "Name", "Age", "Gender", "Project", "Time"}
	var rowIdEn = 1
	for index, item := range tableHeaderEn {
		if err := streamWriter.SetRow(cellLocation(index, rowIdEn), []interface{}{excelize.Cell{StyleID: styleIdEn, Value: item}}); err != nil {
			fmt.Println(err)
		}
	}

	//隐藏第一行
	err = xlsx.SetRowVisible(iterationName, rowIdEn, false)
	if err != nil {
		fmt.Println(err)
	}

	//表头名称第二行
	var tableHeaderCn []string
	tableHeaderCn = []string{"序号", "姓名", "年龄", "性别", "工程", "时长"}
	var rowIdCn = 2
	for index, item := range tableHeaderCn {
		if err := streamWriter.SetRow(cellLocation(index, rowIdCn), []interface{}{excelize.Cell{StyleID: styleIdCn, Value: item}}); err != nil {
			fmt.Println(err)
		}
	}

	//第三行开始
	for rowID := 3; rowID <= 10; rowID++ {
		row := make([]interface{}, 6)
		for colID := 0; colID < 6; colID++ {
			row[colID] = rand.Intn(640000)
		}
		cell, _ := excelize.CoordinatesToCellName(1, rowID)
		if err := streamWriter.SetRow(cell, row); err != nil {
			fmt.Println(err)
		}
	}

	index := xlsx.GetSheetIndex(iterationName)
	xlsx.SetActiveSheet(index)

	if err := streamWriter.Flush(); err != nil {
		fmt.Println(err)
	}

	fmt.Println("End generating test time excel.")
	if err := xlsx.SaveAs(excelFilePath); err != nil {
		fmt.Println(err)
	}
	//return //xlsx.SaveAs(excelFilePath)
}

// cellLocation get cell location with given column and row
func cellLocation(c int, r int) (cellLocation string) {
	sc := 'A'
	if c < 26 {
		cellLocation = string(int(sc)+c) + strconv.Itoa(r)
	} else {
		cellLocation = "A" + string(int(sc)+c-26) + strconv.Itoa(r)
	}
	return
}

excel_stream.h

/* Code generated by cmd/cgo; DO NOT EDIT. */

/* package strong-excelize/hellp */


#line 1 "cgo-builtin-export-prolog"

#include <stddef.h> /* for ptrdiff_t below */

#ifndef GO_CGO_EXPORT_PROLOGUE_H
#define GO_CGO_EXPORT_PROLOGUE_H

#ifndef GO_CGO_GOSTRING_TYPEDEF
typedef struct { const char *p; ptrdiff_t n; } _GoString_;
#endif

#endif

/* Start of preamble from import "C" comments.  */




/* End of preamble from import "C" comments.  */


/* Start of boilerplate cgo prologue.  */
#line 1 "cgo-gcc-export-header-prolog"

#ifndef GO_CGO_PROLOGUE_H
#define GO_CGO_PROLOGUE_H

typedef signed char GoInt8;
typedef unsigned char GoUint8;
typedef short GoInt16;
typedef unsigned short GoUint16;
typedef int GoInt32;
typedef unsigned int GoUint32;
typedef long long GoInt64;
typedef unsigned long long GoUint64;
typedef GoInt64 GoInt;
typedef GoUint64 GoUint;
typedef __SIZE_TYPE__ GoUintptr;
typedef float GoFloat32;
typedef double GoFloat64;
typedef float _Complex GoComplex64;
typedef double _Complex GoComplex128;

/*
  static assertion to make sure the file is being used on architecture
  at least with matching size of GoInt.
*/
typedef char _check_for_64_bit_pointer_matching_GoInt[sizeof(void*)==64/8 ? 1:-1];

#ifndef GO_CGO_GOSTRING_TYPEDEF
typedef _GoString_ GoString;
#endif
typedef void *GoMap;
typedef void *GoChan;
typedef struct { void *t; void *v; } GoInterface;
typedef struct { void *data; GoInt len; GoInt cap; } GoSlice;

#endif

/* End of boilerplate cgo prologue.  */

#ifdef __cplusplus
extern "C" {
#endif

extern __declspec(dllexport) void testTimeExcel2(GoString excelFilePath, GoString iterationName, GoSlice tableHeaderEn);

#ifdef __cplusplus
}
#endif

Thanks again

[aleqsss]

Hi @bosscloud,

I also use a []string in GOLang and am wondering how to call it from C# rather than Java as you try. Did you ever manage to solve this, and if so, how?

Any input appreciated!